The first step with any assignment is to clarify any terms you are unsure of and identify any gaps in your understanding of your topic. Using reference materials (encyclopedias, dictionaries, handbooks) is like using Wikipedia, but better! Reference materials contain concise entries about different topics to help you define what you're looking for. Check out the reference materials below to learn more about different writers, their work, literary terminology, and theory.
Keywords are words that hold the essence, or the key, of what you are trying to find. Keywords should be descriptive and short and are often (but not always) nouns. If you're feeling stuck, try using a key concept/idea, a key group (e.g.: women, newcomers, Indigenous people), a location, a literary concept (e.g.: satire, metaphor, characterization, genre) or a time period as your keywords.
If you are searching for sources for an assignment, you can identify the first keywords from the topic itself. Usually three keywords will give your search a good level of specificity. The more keywords you add, the narrower your search becomes.
Topic example: How do female characters portray strength in science fiction?
Keywords: Women (key group), science fiction (literary genre), strength (concept)
Synonyms are words that have the same, or nearly the same, meaning as the main keywords. Synonyms and keywords are interchangeable, which means that the meaning of your search will remain the same but your scope will be more broad. Using synonyms is a good way to capture extra results that are still related to your original topic.
Here are a few synonyms for the topic: How do female characters portray strength in science fiction?
Women = Woman, females, girls, nonbinary
science fiction = sci-fi, fantasy (not exactly the same genre, but close!)
strength = power, control
Canad* will search for Canada, Canadian, Canadians all at the same time.
femini* will search for feminist, feminism, feminization, etc.
Wom*n will search: woman, women