Spend some time brainstorming keywords and search terms. Use subject headings or descriptors to help generate search terms.
When you find a good article, look at its References or Works Cited list. That will often lead you to other useful sources.
Do you have an article citation, but need to find the full-text article?
Three Steps to Finding the Full Text Article...
In addition to looking in article databases, you can search in a particular journal. The library's E-journals page lists the journals to which the library subscribes.