Start with 2-3 important words relating to your topic. If you start with too many, it may limit your search too much and you may miss resources that would be perfect for your paper.
Add on extra words to narrow down your results. More words = fewer results.
Use "quotation marks" to keep your keywords side-by-side as an exact phrase, for example, "social movements" or "black lives matter."
Use the * asterisk as a wild card to give you the same stem with any ending, for example, activis* will give you the words activism and activist.
Use (parentheses) to nest, or combine similar keywords with the connectors OR, AND, NOT, for example, (women or gender or sex) and ("social activism or "social movement")