Finding Keywords
The first step is to determine keywords that sum up the main concepts of your topic. Keywords are typically nouns or noun phrases. If you phrase your topic as a research question or thesis, you can often pull keywords from the topic sentence.
Example topic: How did the portrayal of African-Americans in musical films change over time?
Keywords: african americans • musical films •portrayal
Sometimes the keywords from your original topic sentence will not produce the types of results you want. When that happens, try to think of related keywords. These can be other words that have similar meanings, words that are broader (good for when you have too few results), or words that are more specific (good for when you have too many results).
Example related keywords:
Similar: blacks, musical cinema, role
Broader: minorities, movies, scripts
Narrower: african american women, rock musicals, music