Google detailed searching structions - Constructing and refining searches in Google. Google is distinguished by its ranking algorithm based on how many good sites link to each site, along with other factors like the proximity of your search keywords or phrases in the documents.
People link to totally unreliable pages almost as much as good ones.
Almost all of the pages this tutorial uses to demonstrate the crucial importance of evaluating what you find on the web were drawn from the top 10 or 15 hits in Google. It allows you to limit by language. You can customize Google a bit. You can specify how many results to display, which can save loading time if you plan to look down into the results. If you enter variants or equivalent terms in one search, ALL will be required in ALL documents.