Use a semi-colon or period. You can use connecting words like and , such as , or or just like plain English. The search works best with multi-word phrases. The search is case-insensitive. The Boolean operators such as and , or , not , and adj are treated as words.
Quotation marks have no effect.
They are simply treated as text. Query by Example Instead of writing the query yourself, you can highlight text in another window and paste it in the query box. You can use phrases, sentences, paragraphs, or even an entire document for your query. You do not have to specify variants of your search term such as plural forms, different endings, etc. The search engine does this automatically.