- By default, multiple words are treated as optional: Example: organ biopsies is interpreted as organ OR biopsies
-
Search specific fields using this format: field_name:"search term or phrase". See below for a list of search fields.
Example: title:"transplants" -
Wildcards - use ? for one character, * for multiple characters
Example: transplant? returns transplants, transplant* returns transplants, transplanted, and transplantation -
Boolean logic - use + ["OR"], - ["AND NOT"] to add or exclude terms
Example: transplant +organ -biopsies -
Phrases - group terms in double quotes to match entire phrases
Example: "human transplant rejection"
