Create a research log, and after you have developed an initial topic, jot down all of the keywords that you can think of to describe that topic. Next, contact one of the other students in the class and ask them to review your topic and keywords. See if they have any other ideas. Of course, you should offer to reciprocate. Use the log to record all of your searches using various databases, etc. A research log will allow you to recreate successful searches at a future time.