Ovid-Databases
exp/	Exploded index term
/	After an index term indicates a subject heading was selected.
.ti,ab,kf.	Search for a term in the title, abstract, and author keywords
.kw.	=keyword heading
*	At the end of a term indicates that this term has been truncated, diet* retrieves both diet, diets, dietary.
Adj3	Search for two terms next to each other, in any order, up to 3 words in between.
Cochrane Library
ti,ab,kw	Search for a word in the title, abstract, or keyword
NEAR/3	Search for two terms next to each other, in any order, up to 3 words in between.