Skim the title list first. When you find an interesting title, check for an abstract (brief summary) of the article, or a summary of the book, to help you decide if it will really fit your needs.
Be choosy! An article or book can contain all your keywords but still not be useful.
If you get no results or uninteresting results:
For example, if your search was:
death penalty and racism
Try these instead:
capital punishment and racism
death penalty and discrimination
If you get too many results: