
Before you search, consider ALL the fundamental requirements of the information you seek. Your objective is to use techniques to help you achieve RELEVANT sources, NOT just ABUNDANT sources.
What is your topic? Are there multiple terms to describe it? Consider your assignment and the topics associated with it. What other highly descriptive terms can you pull together for your search?

What kinds of sources are required? Check your assignment prompt and use 'Advanced Search' to display specific formats of information such as books, journal articles, videos, etc. You can also apply the filters from the "Refine my results" toolbar.
Must your sources be peer-reviewed? Look for the term "peer-reviewed" in your results list, OR filter your results to display only articles from peer-reviewed journals.
How recent must your sources be? Five to ten years is a general window for most sources. Sciences will be shorter. Use the tools available to limit the years for which your source must be published.