Exact phrase - put it in quotations
- licorice AND "blood pressure"
Find specific types of articles:
- licorice AND (study OR patients OR trial)
- licorice AND "literature review*"
Find magazines or journals: look in the left sidebar of database results pages for the option to Limit To Magazines or Scholarly (Peer Reviewed) Journals
Truncate terms if appropriate. Adding an * at the end of a word will search for alternate word endings. For example, clon* will retrieve cloning, clone, clones, clonal.