To pare down the hits to an acceptable number use the logical operator AND between all of your search terms. In AltaVista and Infoseek use + before any term to ensure that it is included in the selections.
Sometimes it is helpful to restrict the search to university sites only by including +.edu in your search terms.
Use the wildcard operator * to deal with variants in the form and spelling of key terms - e.g., col*r will find sites with both British and American spellings.
Use quotation marks to search for phrases - e.g., "course description".
Once you have clicked onto a site and want to find the relevant section of the document use the Find button on your browser to search for the keyword.