This leads to a page listing a number of very useful search engines. A Tutorial . Every search engine requires the researcher to learn specific searching protocols since every search engine searches a different database, a different grouping of web pages. Researchers get different results depending on the search engine used. Learn the various search techniques, and the range of specific databases to better target research efforts.
Researchers often use meta-search engines when searching the 'Net.
A meta-search engine permits the researcher to enter a search in the search box. It sends the search to a group of search engines and their different databases of Web pages, and provides a collection of results from the group of search engines questioned. Since a meta-search engine searches a group of search engines with different searching techniques, researchers typically can use only the more basic search protocols. Often advanced searching techniques are not recognized. Meta-search engines can be very useful, but by no means do they eliminate the need for single search engines.