The key to finding good search results is to have good search terms and to have several search terms to use.
If your topic involves several ideas, utilize this procedure for each idea in order to find the best results.
Keyword searches and Subject searches are very similar but can produce vastly different results.
Keyword searches search for a word anywhere in the search record. Depending on the type of resource being searched, a keyword search may also search the text of an article or book. Because a keyword search searches everywhere, often the search results can be quite large and may contain results that do not match your topic. For example, a search for Paul as shown below has a large number of results.
A search for Paul finds results about anyone named Paul whether that is the subject being written about or the name of the author. Paul would also locate items published in a location with Paul in the name such as "St. Paul, Minnesota."
This example shows how "Paul" can be found in the title, author, subject, or table of contents of a search:
A subject search on the other hand is more precise as it is an official heading given to a topic. In the example above, "Paul, the Apostle, Saint" is the official subject heading and the search is a much smaller 79 results.