Four NETS for Better Searching

"Most people use a search engine by simply typing a few words into the query box and then scrolling through whatever comes up. Sometimes their choice of words ends up narrowing the search unduly and causing them not to find what they're looking for. More often the end result of the search is a haystack of off-target web pages that must be combed through. You can do better than that, and that's what this page is about."

Narrow - Exact - Trim - Similar

http://webquest.sdsu.edu/searching/fournets.htm