Copernic2000 is the best search engine I have ever used for searching on the web.
it is very useful to search each and every type of keyword u want to search for. its main feature is that it searches together in 15 search engines mainly altavista, yahoo, gogle etc. it shows the results of all in a single window.
to use this search engine, u have to download its various versions. copernic 2000 is free to download. then u have to install it on your pc. then only u can use it.
it produces the various websites which have been searched by all the engines together. then u can go to the webpage nearest to the keyword.
the result is shown in the list alphabatically.
i think it is very useful because u do not need to go to the various search engines saperately.