Most words have synonyms that mean the same, or very similar, things. For each keyword in your topic, try to come up with at least one synonym. Not all keywords will have synonyms, but many do!
Keep an Eye Out
Sometimes scholars use terms that you might not be familiar with, or which might mean something very specific within the discipline. While searching, look for unfamiliar terms or words that show up a lot. Try searching for those and see if you find more relevant sources.
Most library databases have search tools built in. Try some of these:
Or look for an "advanced search" page to find these tools - and more!
You can evaluate any source using the E.S.C.A.P.E. plan
Use the operator AND to find only sources that mention both keywords.
This search will bring back fewer results than searching either keyword on its own.
Use the OR operator to expand your search with additional keywords.
This will find sources that include either word, so you'll see more results than by searching for just one keyword.
Use the “QUOTES” strategy to search for several words in a phrase.
This will bring back results that only use that exact phrase.