Research is a process! Try one search and evaluate your results. If necessary, modify your strategy (use different keywords, try using the Boolean operators, etc.) and try again.
Start with simple keyword searches
Use the database options to Refine orLimit and narrow your search
Remember that although one database may look very different from another, most databases are searchable in similar ways and function comparably
Evaluate a source by reading the Abstract or summary
Review your results to identify concepts, keywords, and other terminology that can help improve your search results
Check the Subject Headings and Descriptors, standard vocabulary terms that describe the contents of resources
Use the different limits available in most databases to help narrow down your results. Of course, if you're not getting enough results, you may need to broaden your search term(s) or select fewer limits.
Some examples of limits are:
publication type (such as journal, magazine, e-book, etc.)
type of journal (such as peer-reviewed)
Look for database Tools or Options to Email, Save and Cite articles.