Make sure your search terms are spelled correctly.
Using multiple words will return more refined results than a single word. For example, typing our free service will return more relevant results than typing just service. (Keep in mind that relevant results are returned even if they don't contain all query terms.)
The more similar words you use in a search, the more relevant your results will be.
If you don't know the exact words you are looking for, just use the parts you know. For example, typing des will return results that contain des in any form, be it descramble, describe or DES Algorithm.
Achim J. Latz, achim@latz.cc , 01.12.2008