Skill: phucanh08/multi-search-engine-2 (version 1.0.0)

--- name: "multi-search-engine" description: "Multi search engine integration with 17 engines (8 CN + 9 Global). Supports advanced search operators, time filters, site search, privacy engines, and WolframAlpha knowledge queries. No API keys required." --- # Multi Search Engine v2.0.1 Integration of 17 search engines for web crawling without API keys. ## Search Engines ### Domestic (8) - **Baidu**: `https://www.baidu.com/s?wd={keyword}` - **Bing CN**: `https://cn.bing.com/search?q={keyword}&ensearch=0` - **Bing INT**: `https://cn.bing.com/search?q={keyword}&ensearch=1` - **360**: `https://www.so.com/s?q={keyword}` - **Sogou**: `https://sogou.com/web?query={keyword}` - **WeChat**: `https://wx.sogou.com/weixin?type=2&query={keyword}` - **Toutiao**: `https://so.toutiao.com/search?keyword={keyword}` - **Jisilu**: `https://www.jisilu.cn/explore/?keyword={keyword}` ### International (9) - **Google**: `https://www.google.com/search?q={keyword}` - **Google HK**: `https://www.google.com.hk/search?q={keyword}` - **DuckDuckGo**: `https://duckduckgo.com/html/?q={keyword}` - **Yahoo**: `https://search.yahoo.com/search?p={keyword}` - **Startpage**: `https://www.startpage.com/sp/search?query={keyword}` - **Brave**: `https://search.brave.com/search?q={keyword}` - **Ecosia**: `https://www.ecosia.org/search?q={keyword}` - **Qwant**: `https://www.qwant.com/?q={keyword}` - **WolframAlpha**: `https://www.wolframalpha.com/input?i={keyword}` ## Quick Examples ```javascript // Basic search web_fetch({"url": "https://www.google.com/search?q=python+tutorial"}) // Site-specific web_fetch({"url": "https://www.google.com/search?q=site:github.com+react"}) // File type web_fetch({"url": "https://www.google.com/search?q=machine+learning+filetype:pdf"}) // Time filter (past week) web_fetch({"url": "https://www.google.com/search?q=ai+news&tbs=qdr:w"}) // Privacy search web_fetch({"url": "https://duckduckgo.com/html/?q=privacy+tools"}) // DuckDuckGo Bangs web_fetch({"url": "https://duckduckgo.com/html/?q=!gh+tensorflow"}) // Knowledge calculation web_fetch({"url": "https://www.wolframalpha.com/input?i=100+USD+to+CNY"}) ``` ## Advanced Operators | Operator | Example | Description | |----------|---------|-------------| | `site:` | `site:github.com python` | Search within site | | `filetype:` | `filetype:pdf report` | Specific file type | | `""` | `"machine learning"` | Exact match | | `-` | `python -snake` | Exclude term | | `OR` | `cat OR dog` | Either term | ## Time Filters | Parameter | Description | |-----------|-------------| | `tbs=qdr:h` | Past hour | | `tbs=qdr:d` | Past day | | `tbs=qdr:w` | Past week | | `tbs=qdr:m` | Past month | | `tbs=qdr:y` | Past year | ## Privacy Engines - **DuckDuckGo**: No tracking - **Startpage**: Google results + privacy - **Brave**: Independent index - **Qwant**: EU GDPR compliant ## Bangs Shortcuts (DuckDuckGo) | Bang | Destination | |------|-------------| | `!g` | Google | | `!gh` | GitHub | | `!so` | Stack Overflow | | `!w` | Wikipedia | | `!yt` | YouTube | ## WolframAlpha Queries - Math: `integrate x^2 dx` - Conversion: `100 USD to CNY` - Stocks: `AAPL stock` - Weather: `weather in Beijing` ## Documentation - `references/advanced-search.md` - Domestic search guide - `references/international-search.md` - International search guide - `CHANGELOG.md` - Version history ## License MIT

path: CHANGELOG.md
content: # Changelog

## v2.0.1 (2026-02-06)
- Simplified documentation
- Removed gov-related content
- Optimized for ClawHub publishing

## v2.0.0 (2026-02-06)
- Added 9 international search engines
- Enhanced advanced search capabilities
- Added DuckDuckGo Bangs support
- Added WolframAlpha knowledge queries

## v1.0.0 (2026-02-04)
- Initial release with 8 domestic search engines


path: CHANNELLOG.md
content: # Multi Search Engine

## 基本信息

- **名称**: multi-search-engine
- **版本**: v2.0.1
- **描述**: 集成17个搜索引擎（8国内+9国际），支持高级搜索语法
- **发布时间**: 2026-02-06

## 搜索引擎

**国内（8个）**: 百度、必应、360、搜狗、微信、头条、集思录
**国际（9个）**: Google、DuckDuckGo、Yahoo、Brave、Startpage、Ecosia、Qwant、WolframAlpha

## 核心功能

- 高级搜索操作符（site:, filetype:, intitle:等）
- DuckDuckGo Bangs快捷命令
- 时间筛选（小时/天/周/月/年）
- 隐私保护搜索
- WolframAlpha知识计算

## 更新记录

### v2.0.1 (2026-02-06)
- 精简文档，优化发布

### v2.0.0 (2026-02-06)
- 新增9个国际搜索引擎
- 强化深度搜索能力

### v1.0.0 (2026-02-04)
- 初始版本：8个国内搜索引擎

## 使用示例

```javascript
// Google搜索
web_fetch({"url": "https://www.google.com/search?q=python"})

// 隐私搜索
web_fetch({"url": "https://duckduckgo.com/html/?q=privacy"})

// 站内搜索
web_fetch({"url": "https://www.google.com/search?q=site:github.com+python"})
```

MIT License


path: _meta.json
content: ownerId: kn79j8kk7fb9w10jh83803j7f180a44m
slug: multi-search-engine
version: 2.0.1
publishedAt: 1770313848158

path: config.json
content: {
  "name": "multi-search-engine",
  "engines": [
    {"name": "Baidu", "url": "https://www.baidu.com/s?wd={keyword}", "region": "cn"},
    {"name": "Bing CN", "url": "https://cn.bing.com/search?q={keyword}&ensearch=0", "region": "cn"},
    {"name": "Bing INT", "url": "https://cn.bing.com/search?q={keyword}&ensearch=1", "region": "cn"},
    {"name": "360", "url": "https://www.so.com/s?q={keyword}", "region": "cn"},
    {"name": "Sogou", "url": "https://sogou.com/web?query={keyword}", "region": "cn"},
    {"name": "WeChat", "url": "https://wx.sogou.com/weixin?type=2&query={keyword}", "region": "cn"},
    {"name": "Toutiao", "url": "https://so.toutiao.com/search?keyword={keyword}", "region": "cn"},
    {"name": "Jisilu", "url": "https://www.jisilu.cn/explore/?keyword={keyword}", "region": "cn"},
    {"name": "Google", "url": "https://www.google.com/search?q={keyword}", "region": "global"},
    {"name": "Google HK", "url": "https://www.google.com.hk/search?q={keyword}", "region": "global"},
    {"name": "DuckDuckGo", "url": "https://duckduckgo.com/html/?q={keyword}", "region": "global"},
    {"name": "Yahoo", "url": "https://search.yahoo.com/search?p={keyword}", "region": "global"},
    {"name": "Startpage", "url": "https://www.startpage.com/sp/search?query={keyword}", "region": "global"},
    {"name": "Brave", "url": "https://search.brave.com/search?q={keyword}", "region": "global"},
    {"name": "Ecosia", "url": "https://www.ecosia.org/search?q={keyword}", "region": "global"},
    {"name": "Qwant", "url": "https://www.qwant.com/?q={keyword}", "region": "global"},
    {"name": "WolframAlpha", "url": "https://www.wolframalpha.com/input?i={keyword}", "region": "global"}
  ]
}


path: metadata.json
content: name: multi-search-engine
version: 2.0.1
description: Multi search engine with 17 engines (8 CN + 9 Global). Supports advanced operators, time filters, privacy engines.
engines: 17
requires_api_key: no

path: references/international-search.md
content: # 国际搜索引擎深度搜索指南

## 🔍 Google 深度搜索

### 1.1 基础高级搜索操作符

| 操作符 | 功能 | 示例 | URL |
|--------|------|------|-----|
| `""` | 精确匹配 | `"machine learning"` | `https://www.google.com/search?q=%22machine+learning%22` |
| `-` | 排除关键词 | `python -snake` | `https://www.google.com/search?q=python+-snake` |
| `OR` | 或运算 | `machine learning OR deep learning` | `https://www.google.com/search?q=machine+learning+OR+deep+learning` |
| `*` | 通配符 | `machine * algorithms` | `https://www.google.com/search?q=machine+*+algorithms` |
| `()` | 分组 | `(apple OR microsoft) phones` | `https://www.google.com/search?q=(apple+OR+microsoft)+phones` |
| `..` | 数字范围 | `laptop $500..$1000` | `https://www.google.com/search?q=laptop+%24500..%241000` |

### 1.2 站点与文件搜索

| 操作符 | 功能 | 示例 |
|--------|------|------|
| `site:` | 站内搜索 | `site:github.com python projects` |
| `filetype:` | 文件类型 | `filetype:pdf annual report` |
| `inurl:` | URL包含 | `inurl:login admin` |
| `intitle:` | 标题包含 | `intitle:"index of" mp3` |
| `intext:` | 正文包含 | `intext:password filetype:txt` |
| `cache:` | 查看缓存 | `cache:example.com` |
| `related:` | 相关网站 | `related:github.com` |
| `info:` | 网站信息 | `info:example.com` |

### 1.3 时间筛选参数

| 参数 | 含义 | URL示例 |
|------|------|---------|
| `tbs=qdr:h` | 过去1小时 | `https://www.google.com/search?q=news&tbs=qdr:h` |
| `tbs=qdr:d` | 过去24小时 | `https://www.google.com/search?q=news&tbs=qdr:d` |
| `tbs=qdr:w` | 过去1周 | `https://www.google.com/search?q=news&tbs=qdr:w` |
| `tbs=qdr:m` | 过去1月 | `https://www.google.com/search?q=news&tbs=qdr:m` |
| `tbs=qdr:y` | 过去1年 | `https://www.google.com/search?q=news&tbs=qdr:y` |
| `tbs=cdr:1,cd_min:1/1/2024,cd_max:12/31/2024` | 自定义日期范围 | 2024年全年 |

### 1.4 语言和地区筛选

| 参数 | 功能 | 示例 |
|------|------|------|
| `hl=en` | 界面语言 | `https://www.google.com/search?q=test&hl=en` |
| `lr=lang_zh-CN` | 搜索结果语言 | `https://www.google.com/search?q=test&lr=lang_zh-CN` |
| `cr=countryCN` | 国家/地区 | `https://www.google.com/search?q=test&cr=countryCN` |
| `gl=us` | 地理位置 | `https://www.google.com/search?q=test&gl=us` |

### 1.5 特殊搜索类型

| 类型 | URL | 说明 |
|------|-----|------|
| 图片搜索 | `https://www.google.com/search?q={keyword}&tbm=isch` | `tbm=isch` 表示图片 |
| 新闻搜索 | `https://www.google.com/search?q={keyword}&tbm=nws` | `tbm=nws` 表示新闻 |
| 视频搜索 | `https://www.google.com/search?q={keyword}&tbm=vid` | `tbm=vid` 表示视频 |
| 地图搜索 | `https://www.google.com/search?q={keyword}&tbm=map` | `tbm=map` 表示地图 |
| 购物搜索 | `https://www.google.com/search?q={keyword}&tbm=shop` | `tbm=shop` 表示购物 |
| 图书搜索 | `https://www.google.com/search?q={keyword}&tbm=bks` | `tbm=bks` 表示图书 |
| 学术搜索 | `https://scholar.google.com/scholar?q={keyword}` | Google Scholar |

### 1.6 Google 深度搜索示例

```javascript
// 1. 搜索GitHub上的Python机器学习项目
web_fetch({"url": "https://www.google.com/search?q=site:github.com+python+machine+learning"})

// 2. 搜索2024年的PDF格式机器学习教程
web_fetch({"url": "https://www.google.com/search?q=machine+learning+tutorial+filetype:pdf&tbs=cdr:1,cd_min:1/1/2024"})

// 3. 搜索标题包含"tutorial"的Python相关页面
web_fetch({"url": "https://www.google.com/search?q=intitle:tutorial+python"})

// 4. 搜索过去一周的新闻
web_fetch({"url": "https://www.google.com/search?q=AI+breakthrough&tbs=qdr:w&tbm=nws"})

// 5. 搜索中文内容（界面英文，结果中文）
web_fetch({"url": "https://www.google.com/search?q=人工智能&lr=lang_zh-CN&hl=en"})

// 6. 搜索特定价格范围的笔记本电脑
web_fetch({"url": "https://www.google.com/search?q=laptop+%241000..%242000+best+rating"})

// 7. 搜索排除Wikipedia的结果
web_fetch({"url": "https://www.google.com/search?q=python+programming+-wikipedia"})

// 8. 搜索学术文献
web_fetch({"url": "https://scholar.google.com/scholar?q=deep+learning+optimization"})

// 9. 搜索缓存页面（查看已删除内容）
web_fetch({"url": "https://webcache.googleusercontent.com/search?q=cache:example.com"})

// 10. 搜索相关网站
web_fetch({"url": "https://www.google.com/search?q=related:stackoverflow.com"})
```

---

## 🦆 DuckDuckGo 深度搜索

### 2.1 DuckDuckGo 特色功能

| 功能 | 语法 | 示例 |
|------|------|------|
| **Bangs 快捷** | `!缩写` | `!g python` → Google搜索 |
| **密码生成** | `password` | `https://duckduckgo.com/?q=password+20` |
| **颜色转换** | `color` | `https://duckduckgo.com/?q=+%23FF5733` |
| **短链接** | `shorten` | `https://duckduckgo.com/?q=shorten+example.com` |
| **二维码生成** | `qr` | `https://duckduckgo.com/?q=qr+hello+world` |
| **生成UUID** | `uuid` | `https://duckduckgo.com/?q=uuid` |
| **Base64编解码** | `base64` | `https://duckduckgo.com/?q=base64+hello` |

### 2.2 DuckDuckGo Bangs 完整列表

#### 搜索引擎

| Bang | 跳转目标 | 示例 |
|------|---------|------|
| `!g` | Google | `!g python tutorial` |
| `!b` | Bing | `!b weather` |
| `!y` | Yahoo | `!y finance` |
| `!sp` | Startpage | `!sp privacy` |
| `!brave` | Brave Search | `!brave tech` |

#### 编程开发

| Bang | 跳转目标 | 示例 |
|------|---------|------|
| `!gh` | GitHub | `!gh tensorflow` |
| `!so` | Stack Overflow | `!so javascript error` |
| `!npm` | npmjs.com | `!npm express` |
| `!pypi` | PyPI | `!pypi requests` |
| `!mdn` | MDN Web Docs | `!mdn fetch api` |
| `!docs` | DevDocs | `!docs python` |
| `!docker` | Docker Hub | `!docker nginx` |

#### 知识百科

| Bang | 跳转目标 | 示例 |
|------|---------|------|
| `!w` | Wikipedia | `!w machine learning` |
| `!wen` | Wikipedia英文 | `!wen artificial intelligence` |
| `!wt` | Wiktionary | `!wt serendipity` |
| `!imdb` | IMDb | `!imdb inception` |

#### 购物价格

| Bang | 跳转目标 | 示例 |
|------|---------|------|
| `!a` | Amazon | `!a wireless headphones` |
| `!e` | eBay | `!e vintage watch` |
| `!ali` | AliExpress | `!ali phone case` |

#### 地图位置

| Bang | 跳转目标 | 示例 |
|------|---------|------|
| `!m` | Google Maps | `!m Beijing` |
| `!maps` | OpenStreetMap | `!maps Paris` |

### 2.3 DuckDuckGo 搜索参数

| 参数 | 功能 | 示例 |
|------|------|------|
| `kp=1` | 严格安全搜索 | `https://duckduckgo.com/html/?q=test&kp=1` |
| `kp=-1` | 关闭安全搜索 | `https://duckduckgo.com/html/?q=test&kp=-1` |
| `kl=cn` | 中国区域 | `https://duckduckgo.com/html/?q=news&kl=cn` |
| `kl=us-en` | 美国英文 | `https://duckduckgo.com/html/?q=news&kl=us-en` |
| `ia=web` | 网页结果 | `https://duckduckgo.com/?q=test&ia=web` |
| `ia=images` | 图片结果 | `https://duckduckgo.com/?q=test&ia=images` |
| `ia=news` | 新闻结果 | `https://duckduckgo.com/?q=test&ia=news` |
| `ia=videos` | 视频结果 | `https://duckduckgo.com/?q=test&ia=videos` |

### 2.4 DuckDuckGo 深度搜索示例

```javascript
// 1. 使用Bang跳转到Google搜索
web_fetch({"url": "https://duckduckgo.com/html/?q=!g+machine+learning"})

// 2. 直接搜索GitHub上的项目
web_fetch({"url": "https://duckduckgo.com/html/?q=!gh+react"})

// 3. 查找Stack Overflow答案
web_fetch({"url": "https://duckduckgo.com/html/?q=!so+python+list+comprehension"})

// 4. 生成密码
web_fetch({"url": "https://duckduckgo.com/?q=password+16"})

// 5. Base64编码
web_fetch({"url": "https://duckduckgo.com/?q=base64+hello+world"})

// 6. 颜色代码转换
web_fetch({"url": "https://duckduckgo.com/?q=%23FF5733"})

// 7. 搜索YouTube视频
web_fetch({"url": "https://duckduckgo.com/html/?q=!yt+python+tutorial"})

// 8. 查看Wikipedia
web_fetch({"url": "https://duckduckgo.com/html/?q=!w+artificial+intelligence"})

// 9. 亚马逊商品搜索
web_fetch({"url": "https://duckduckgo.com/html/?q=!a+laptop"})

// 10. 生成二维码
web_fetch({"url": "https://duckduckgo.com/?q=qr+https://github.com"})
```

---

## 🔎 Brave Search 深度搜索

### 3.1 Brave Search 特色功能

| 功能 | 参数 | 示例 |
|------|------|------|
| **独立索引** | 无依赖Google/Bing | 自有爬虫索引 |
| **Goggles** | 自定义搜索规则 | 创建个性化过滤器 |
| **Discussions** | 论坛讨论搜索 | 聚合Reddit等论坛 |
| **News** | 新闻聚合 | 独立新闻索引 |

### 3.2 Brave Search 参数

| 参数 | 功能 | 示例 |
|------|------|------|
| `tf=pw` | 本周 | `https://search.brave.com/search?q=news&tf=pw` |
| `tf=pm` | 本月 | `https://search.brave.com/search?q=tech&tf=pm` |
| `tf=py` | 本年 | `https://search.brave.com/search?q=AI&tf=py` |
| `safesearch=strict` | 严格安全 | `https://search.brave.com/search?q=test&safesearch=strict` |
| `source=web` | 网页搜索 | 默认 |
| `source=news` | 新闻搜索 | `https://search.brave.com/search?q=tech&source=news` |
| `source=images` | 图片搜索 | `https://search.brave.com/search?q=cat&source=images` |
| `source=videos` | 视频搜索 | `https://search.brave.com/search?q=music&source=videos` |

### 3.3 Brave Search Goggles（自定义过滤器）

Goggles 允许创建自定义搜索规则：

```
$discard  // 丢弃所有
$boost,site=stackoverflow.com  // 提升Stack Overflow
$boost,site=github.com  // 提升GitHub
$boost,site=docs.python.org  // 提升Python文档
```

### 3.4 Brave Search 深度搜索示例

```javascript
// 1. 本周科技新闻
web_fetch({"url": "https://search.brave.com/search?q=technology&tf=pw&source=news"})

// 2. 本月AI发展
web_fetch({"url": "https://search.brave.com/search?q=artificial+intelligence&tf=pm"})

// 3. 图片搜索
web_fetch({"url": "https://search.brave.com/search?q=machine+learning&source=images"})

// 4. 视频教程
web_fetch({"url": "https://search.brave.com/search?q=python+tutorial&source=videos"})

// 5. 使用独立索引搜索
web_fetch({"url": "https://search.brave.com/search?q=privacy+tools"})
```

---

## 📊 WolframAlpha 知识计算搜索

### 4.1 WolframAlpha 数据类型

| 类型 | 查询示例 | URL |
|------|---------|-----|
| **数学计算** | `integrate x^2 dx` | `https://www.wolframalpha.com/input?i=integrate+x%5E2+dx` |
| **单位换算** | `100 miles to km` | `https://www.wolframalpha.com/input?i=100+miles+to+km` |
| **货币转换** | `100 USD to CNY` | `https://www.wolframalpha.com/input?i=100+USD+to+CNY` |
| **股票数据** | `AAPL stock` | `https://www.wolframalpha.com/input?i=AAPL+stock` |
| **天气查询** | `weather in Beijing` | `https://www.wolframalpha.com/input?i=weather+in+Beijing` |
| **人口数据** | `population of China` | `https://www.wolframalpha.com/input?i=population+of+China` |
| **化学元素** | `properties of gold` | `https://www.wolframalpha.com/input?i=properties+of+gold` |
| **营养成分** | `nutrition of apple` | `https://www.wolframalpha.com/input?i=nutrition+of+apple` |
| **日期计算** | `days between Jan 1 2020 and Dec 31 2024` | 日期间隔计算 |
| **时区转换** | `10am Beijing to New York` | 时区转换 |
| **IP地址** | `8.8.8.8` | IP信息查询 |
| **条形码** | `scan barcode 123456789` | 条码信息 |
| **飞机航班** | `flight AA123` | 航班信息 |

### 4.2 WolframAlpha 深度搜索示例

```javascript
// 1. 计算积分
web_fetch({"url": "https://www.wolframalpha.com/input?i=integrate+sin%28x%29+from+0+to+pi"})

// 2. 解方程
web_fetch({"url": "https://www.wolframalpha.com/input?i=solve+x%5E2-5x%2B6%3D0"})

// 3. 货币实时汇率
web_fetch({"url": "https://www.wolframalpha.com/input?i=100+USD+to+CNY"})

// 4. 股票实时数据
web_fetch({"url": "https://www.wolframalpha.com/input?i=Apple+stock+price"})

// 5. 城市天气
web_fetch({"url": "https://www.wolframalpha.com/input?i=weather+in+Shanghai+tomorrow"})

// 6. 国家统计信息
web_fetch({"url": "https://www.wolframalpha.com/input?i=GDP+of+China+vs+USA"})

// 7. 化学计算
web_fetch({"url": "https://www.wolframalpha.com/input?i=molar+mass+of+H2SO4"})

// 8. 物理常数
web_fetch({"url": "https://www.wolframalpha.com/input?i=speed+of+light"})

// 9. 营养信息
web_fetch({"url": "https://www.wolframalpha.com/input?i=calories+in+banana"})

// 10. 历史日期
web_fetch({"url": "https://www.wolframalpha.com/input?i=events+on+July+20+1969"})
```

---

## 🔧 Startpage 隐私搜索

### 5.1 Startpage 特色功能

| 功能 | 说明 | URL |
|------|------|-----|
| **代理浏览** | 匿名访问搜索结果 | 点击"匿名查看" |
| **无追踪** | 不记录搜索历史 | 默认开启 |
| **EU服务器** | 受欧盟隐私法保护 | 数据在欧洲 |
| **代理图片** | 图片代理加载 | 隐藏IP |

### 5.2 Startpage 参数

| 参数 | 功能 | 示例 |
|------|------|------|
| `cat=web` | 网页搜索 | 默认 |
| `cat=images` | 图片搜索 | `...&cat=images` |
| `cat=video` | 视频搜索 | `...&cat=video` |
| `cat=news` | 新闻搜索 | `...&cat=news` |
| `language=english` | 英文结果 | `...&language=english` |
| `time=day` | 过去24小时 | `...&time=day` |
| `time=week` | 过去一周 | `...&time=week` |
| `time=month` | 过去一月 | `...&time=month` |
| `time=year` | 过去一年 | `...&time=year` |
| `nj=0` | 关闭 family filter | `...&nj=0` |

### 5.3 Startpage 深度搜索示例

```javascript
// 1. 隐私搜索
web_fetch({"url": "https://www.startpage.com/sp/search?query=privacy+tools"})

// 2. 图片隐私搜索
web_fetch({"url": "https://www.startpage.com/sp/search?query=nature&cat=images"})

// 3. 本周新闻（隐私模式）
web_fetch({"url": "https://www.startpage.com/sp/search?query=tech+news&time=week&cat=news"})

// 4. 英文结果搜索
web_fetch({"url": "https://www.startpage.com/sp/search?query=machine+learning&language=english"})
```

---

## 🌍 综合搜索策略

### 6.1 按搜索目标选择引擎

| 搜索目标 | 首选引擎 | 备选引擎 | 原因 |
|---------|---------|---------|------|
| **学术研究** | Google Scholar | Google, Brave | 学术资源索引 |
| **编程开发** | Google | GitHub(DuckDuckGo bang) | 技术文档全面 |
| **隐私敏感** | DuckDuckGo | Startpage, Brave | 不追踪用户 |
| **实时新闻** | Brave News | Google News | 独立新闻索引 |
| **知识计算** | WolframAlpha | Google | 结构化数据 |
| **中文内容** | Google HK | Bing | 中文优化好 |
| **欧洲视角** | Qwant | Startpage | 欧盟合规 |
| **环保支持** | Ecosia | DuckDuckGo | 搜索植树 |
| **无过滤** | Brave | Startpage | 无偏见结果 |

### 6.2 多引擎交叉验证

```javascript
// 策略：同一关键词多引擎搜索，对比结果
const keyword = "climate change 2024";

// 获取不同视角
const searches = [
  { engine: "Google", url: `https://www.google.com/search?q=${keyword}&tbs=qdr:m` },
  { engine: "Brave", url: `https://search.brave.com/search?q=${keyword}&tf=pm` },
  { engine: "DuckDuckGo", url: `https://duckduckgo.com/html/?q=${keyword}` },
  { engine: "Ecosia", url: `https://www.ecosia.org/search?q=${keyword}` }
];

// 分析不同引擎的结果差异
```

### 6.3 时间敏感搜索策略

| 时效性要求 | 引擎选择 | 参数设置 |
|-----------|---------|---------|
| **实时（小时级）** | Google News, Brave News | `tbs=qdr:h`, `tf=pw` |
| **近期（天级）** | Google, Brave | `tbs=qdr:d`, `time=day` |
| **本周** | 所有引擎 | `tbs=qdr:w`, `tf=pw` |
| **本月** | 所有引擎 | `tbs=qdr:m`, `tf=pm` |
| **历史** | Google Scholar | 学术档案 |

### 6.4 专业领域深度搜索

#### 技术开发

```javascript
// GitHub 项目搜索
web_fetch({"url": "https://duckduckgo.com/html/?q=!gh+tensorflow+stars:%3E1000"})

// Stack Overflow 问题
web_fetch({"url": "https://duckduckgo.com/html/?q=!so+python+memory+leak"})

// MDN 文档
web_fetch({"url": "https://duckduckgo.com/html/?q=!mdn+javascript+async+await"})

// PyPI 包
web_fetch({"url": "https://duckduckgo.com/html/?q=!pypi+requests"})

// npm 包
web_fetch({"url": "https://duckduckgo.com/html/?q=!npm+express"})
```

#### 学术研究

```javascript
// Google Scholar 论文
web_fetch({"url": "https://scholar.google.com/scholar?q=deep+learning+2024"})

// 搜索PDF论文
web_fetch({"url": "https://www.google.com/search?q=machine+learning+filetype:pdf+2024"})

// arXiv 论文
web_fetch({"url": "https://duckduckgo.com/html/?q=site:arxiv.org+quantum+computing"})
```

#### 金融投资

```javascript
// 股票实时数据
web_fetch({"url": "https://www.wolframalpha.com/input?i=AAPL+stock"})

// 汇率转换
web_fetch({"url": "https://www.wolframalpha.com/input?i=EUR+to+USD"})

// 搜索财报PDF
web_fetch({"url": "https://www.google.com/search?q=Apple+Q4+2024+earnings+filetype:pdf"})
```

#### 新闻时事

```javascript
// Google新闻
web_fetch({"url": "https://www.google.com/search?q=breaking+news&tbm=nws&tbs=qdr:h"})

// Brave新闻
web_fetch({"url": "https://search.brave.com/search?q=world+news&source=news"})

// DuckDuckGo新闻
web_fetch({"url": "https://duckduckgo.com/html/?q=tech+news&ia=news"})
```

---

## 🛠️ 高级搜索技巧汇总

### URL编码工具函数

```javascript
// URL编码关键词
function encodeKeyword(keyword) {
  return encodeURIComponent(keyword);
}

// 示例
const keyword = "machine learning";
const encoded = encodeKeyword(keyword); // "machine%20learning"
```

### 批量搜索模板

```javascript
// 多引擎批量搜索函数
function generateSearchUrls(keyword) {
  const encoded = encodeURIComponent(keyword);
  return {
    google: `https://www.google.com/search?q=${encoded}`,
    google_hk: `https://www.google.com.hk/search?q=${encoded}`,
    duckduckgo: `https://duckduckgo.com/html/?q=${encoded}`,
    brave: `https://search.brave.com/search?q=${encoded}`,
    startpage: `https://www.startpage.com/sp/search?query=${encoded}`,
    bing_intl: `https://cn.bing.com/search?q=${encoded}&ensearch=1`,
    yahoo: `https://search.yahoo.com/search?p=${encoded}`,
    ecosia: `https://www.ecosia.org/search?q=${encoded}`,
    qwant: `https://www.qwant.com/?q=${encoded}`
  };
}

// 使用示例
const urls = generateSearchUrls("artificial intelligence");
```

### 时间筛选快捷函数

```javascript
// Google时间筛选URL生成
function googleTimeSearch(keyword, period) {
  const periods = {
    hour: 'qdr:h',
    day: 'qdr:d',
    week: 'qdr:w',
    month: 'qdr:m',
    year: 'qdr:y'
  };
  return `https://www.google.com/search?q=${encodeURIComponent(keyword)}&tbs=${periods[period]}`;
}

// 使用示例
const recentNews = googleTimeSearch("AI breakthrough", "week");
```

---

## 📝 完整搜索示例集

```javascript
// ==================== 技术开发 ====================

// 1. 搜索GitHub上高Star的Python项目
web_fetch({"url": "https://www.google.com/search?q=site:github.com+python+stars:%3E1000"})

// 2. Stack Overflow最佳答案
web_fetch({"url": "https://duckduckgo.com/html/?q=!so+best+way+to+learn+python"})

// 3. MDN文档查询
web_fetch({"url": "https://duckduckgo.com/html/?q=!mdn+promises"})

// 4. 搜索npm包
web_fetch({"url": "https://duckduckgo.com/html/?q=!npm+axios"})

// ==================== 学术研究 ====================

// 5. Google Scholar论文
web_fetch({"url": "https://scholar.google.com/scholar?q=transformer+architecture"})

// 6. 搜索PDF论文
web_fetch({"url": "https://www.google.com/search?q=attention+is+all+you+need+filetype:pdf"})

// 7. arXiv最新论文
web_fetch({"url": "https://duckduckgo.com/html/?q=site:arxiv.org+abs+quantum"})

// ==================== 新闻时事 ====================

// 8. Google最新新闻（过去1小时）
web_fetch({"url": "https://www.google.com/search?q=breaking+news&tbs=qdr:h&tbm=nws"})

// 9. Brave本周科技新闻
web_fetch({"url": "https://search.brave.com/search?q=technology&tf=pw&source=news"})

// 10. DuckDuckGo新闻
web_fetch({"url": "https://duckduckgo.com/html/?q=world+news&ia=news"})

// ==================== 金融投资 ====================

// 11. 股票实时数据
web_fetch({"url": "https://www.wolframalpha.com/input?i=Tesla+stock"})

// 12. 货币汇率
web_fetch({"url": "https://www.wolframalpha.com/input?i=1+BTC+to+USD"})

// 13. 公司财报PDF
web_fetch({"url": "https://www.google.com/search?q=Microsoft+annual+report+2024+filetype:pdf"})

// ==================== 知识计算 ====================

// 14. 数学计算
web_fetch({"url": "https://www.wolframalpha.com/input?i=derivative+of+x%5E3+sin%28x%29"})

// 15. 单位换算
web_fetch({"url": "https://www.wolframalpha.com/input?i=convert+100+miles+to+kilometers"})

// 16. 营养信息
web_fetch({"url": "https://www.wolframalpha.com/input?i=protein+in+chicken+breast"})

// ==================== 隐私保护搜索 ====================

// 17. DuckDuckGo隐私搜索
web_fetch({"url": "https://duckduckgo.com/html/?q=privacy+tools"})

// 18. Startpage匿名搜索
web_fetch({"url": "https://www.startpage.com/sp/search?query=secure+messaging"})

// 19. Brave无追踪搜索
web_fetch({"url": "https://search.brave.com/search?q=encryption+software"})

// ==================== 高级组合搜索 ====================

// 20. Google多条件精确搜索
web_fetch({"url": "https://www.google.com/search?q=%22machine+learning%22+site:github.com+filetype:pdf+2024"})

// 21. 排除特定站点的搜索
web_fetch({"url": "https://www.google.com/search?q=python+tutorial+-wikipedia+-w3schools"})

// 22. 价格范围搜索
web_fetch({"url": "https://www.google.com/search?q=laptop+%24800..%241200+best+review"})

// 23. 使用Bangs快速跳转
web_fetch({"url": "https://duckduckgo.com/html/?q=!g+site:medium.com+python"})

// 24. 图片搜索（Google）
web_fetch({"url": "https://www.google.com/search?q=beautiful+landscape&tbm=isch"})

// 25. 学术引用搜索
web_fetch({"url": "https://scholar.google.com/scholar?q=author:%22Geoffrey+Hinton%22"})
```

---

## 🔐 隐私保护最佳实践

### 搜索引擎隐私级别

| 引擎 | 追踪级别 | 数据保留 | 加密 | 推荐场景 |
|------|---------|---------|------|---------|
| **DuckDuckGo** | 无追踪 | 无保留 | 是 | 日常隐私搜索 |
| **Startpage** | 无追踪 | 无保留 | 是 | 需要Google结果但保护隐私 |
| **Brave** | 无追踪 | 无保留 | 是 | 独立索引，无偏见 |
| **Qwant** | 无追踪 | 无保留 | 是 | 欧盟合规要求 |
| **Google** | 高度追踪 | 长期保留 | 是 | 需要个性化结果 |
| **Bing** | 中度追踪 | 长期保留 | 是 | 微软服务集成 |

### 隐私搜索建议

1. **日常使用**: DuckDuckGo 或 Brave
2. **需要Google结果但保护隐私**: Startpage
3. **学术研究**: Google Scholar（学术用途追踪较少）
4. **敏感查询**: 使用Tor浏览器 + DuckDuckGo onion服务
5. **跨设备同步**: 避免登录搜索引擎账户

---

## 📚 参考资料

- [Google搜索操作符完整列表](https://support.google.com/websearch/answer/...)
- [DuckDuckGo Bangs完整列表](https://duckduckgo.com/bang)
- [Brave Search文档](https://search.brave.com/help/...)
- [WolframAlpha示例](https://www.wolframalpha.com/examples/)


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: suspicious | SkillSpector: clean (LOW)