Have you ever wanted to search Google by excluding certain words, using “and” and “or” between words, or controlling your search in other ways like you can do on WestLaw? Many people are surprised to learn that Google uses many advanced search options similar to WestLaw. Read how to improve the results of your Google searches at Ten Tips for Smarter Google Searches or Pro Guide to Google Searches Part I. Another useful tool is the Google Advanced Search page.
UPDATE: Another great guide to creating powerful Google searches is 20 Tips for More Efficient Google Searches (at Dumb Little Man).