Unlike Google, databases can't understand an entire sentence. So you'll need to break your topic down into the most important ideas - the KEYWORDS.
Example Topic: How does sleep affect college students' mental health?
The specifics of your topic will matter when selecting sources, but for searching you only need the most essential components.
Keywords: sleep, college students, mental health
Search Query:
"college students" AND ''mental health" AND sleep
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!
Example:
Keyword: Mental Health
Keyword:Synonym: emotional health, mental stability
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:
Look for the FILTERS option on the search results page, or for an "advanced search" page to find these tools - and more!
You can evaluate any source using the 5 W's:
Boolean operators help to narrow or broaden your search using your keywords. The most useful boolean operators to connect your searches are: AND, OR, and NOT.

AND finds records containing both terms. This narrows the search. For example:
OR finds records containing either one or both terms. This broadens the search and can also be used to account for various spellings. For example:
NOT finds records containing the first term but not the second term. This narrows the search. For example:
You can use more than one logic connector for the same search statement.
Use quotation marks when you want to search a specific phrase. This will make your search more direct, as the database or catalog will search for your keywords in a specified order. It is a great strategy when your keyword is made up of two or more words. Our example below is body image.
"body image" → body image
body image → body image, body, image, images of the body, body conscious, body appearance, etc.
This example shows that searching the keywords "body image" without the quotation marks, returns several resources with other words that may be unrelated to your search.