| * | asterisk | to truncate words at their root or stem |
diabet* diabetes, diabetic, diabetics |
| " " | quotation marks | to enclose a phrase or name | "heart failure" |
| OR | to connect related terms |
(cardiac OR cardiovascular) (education OR prevent* OR treat*) (nurse OR nursing) |
|
| AND | to combine multiple facets | diabet* AND (cardiac OR cardiovascular) |