Remember that your way of describing a topic may be different from the way a resource is described by its creator or the search service by which it is indexed. Use more than one search service. Services cover different slices of the millions of resources available through the Internet. If you need comprehensive results, use several services. Understand how the results display.
Services display results in different ways.
Displays may include titles only, titles and abstracts, links to specific sections of a resource, and other features. Some services rank the results by relevancy, which may be based on how close together and frequently your search words appear in a resource. With this method the most useful resources should appear first. Keep in mind that you often must look carefully around a site before finding a specific piece of information. Evaluate what you find.