Textbooks, Reference Books, and More
Start with one or two keywords, then combine concepts one at a time.
Use a database's controlled vocabulary to refine and focus results.
The term "controlled vocabulary" refers to the specialized set of keywords that each database uses as a means for categorizing its content. Articles within a database are tagged with relevant keywords (which are clickable), thereby making it easy to find related articles.
The PubMed and MEDLINE databases both use Medical Subject Headings (MeSH) as their controlled vocabulary. CINAHL's controlled vocabulary is based on MeSH, with additional specific nursing and allied health headings added as appropriate.
Here are some tutorials to help you understand how to take advantage of Medical Subject Headings (MeSH):
What to Look for in Databases to Find Full Text Articles:
What to Do for in Databases When Full Text Isn't Available: