When searching a National Library of medicine database (Medline), why is it preferable to use Medical Subject Heading (MESH) instead of a natural language term (textword)?
DATABASES: Interfaces are constantly being changed, revised and updated!
How to construct more tailored searches using Boolean logic (AND, OR, and NOT)
No matter which search engine, the principles of Boolean operators are consistent.
Combining search terms with Boolean operators (AND, OR, NOT)