Need More Specific Results?
Sometimes keywords that worked well in one database won’t be as effective in another.
Keep an eye out for new and unfamiliar concepts, as you review your results and read the literature. Perhaps there are different ways of referring to your topic that you haven't tried yet.
You can also try using the terminology that the databases use, by exploring the Thesaurus or Subject Terms. Many databases have a list of designated words that are used to summarize a topic, but they may not be obvious to you.