Before you begin your actual searching, you need to find keywords and synonyms for your topic. Sometimes, articles will use other words to mean the same something. You will want to create a list of similar words. For example, a database may use the term "hand grip strength" instead of "grip strength."
Before you search or if you get stuck while searching, use a thesaurus to find different words to express your ideas.
Try to find one or two good articles. "Steal" words that appear in the best articles to help you find more.
Find too many articles? Not enough articles? Use the search strategies on this page to help you find better articles.