These links take you to the pages where you may find the information you are looking for. Some of them index all the words on a web-page, some have emphasis on most frequently occurring concepts, phrases, title texts and metadata. When using search engines to do information searches it is worth considering how to limit the search optimally. Otherwise you might be swamped by tens or, at worst, thousands of links. In other words, it's worth reading the instructions offered by the search service.
Many search engines have also other possibilities to limit the search.
The most exhaustive result is obtained by using several search engines , since the indexing criteria of these information factories vary and none of them covers the whole web on its own. Good worldwide indexes include Yahoo and WWW Virtual Library . Haku.net and Fennica focus on Finnish web material. Indexes use varying classifications and material selection criteria . Also the frequency of update varies.