A thorough review of the literature includes:

• Searching multiple databases
• Using synonyms, related terms, and controlled vocabulary (e.g. MeSH terms/headings, APA Thesaurus, etc.) in addition to your topic keywords
• Searching concepts separately to reveal limiting variables
• Combining concepts strategically to focus results without over-narrowing
• Using database limiters/filters thoughtfully
• Applying inclusion/exclusion criteria as you skim result lists 
• Scheduling a research appointment to brainstorm search options with your Personal Librarian

Medical Subject Headings (MeSH) are a controlled vocabulary of terms that describe medical conditions, procedures, interventions, etc. MeSH terms are assigned to content in biomedical literature databases (Medline, PubMed, etc.) to allow researchers to enhance keyword search strategy development.