| Truncation |
Asterisk: $ or *
|
child* retrieves child, children, childbirth, childbearing, childish.
child$ retrieves child, children, childbirth, childbearing, childish.
|
| Mandated Wildcard (single character) |
Pound sign: # |
dog# retrieves dogs, but not dog.
|
| Optional Wildcard (single character) |
Question mark: ? |
colo?r retrieves color, or colour.
|
| Phrases |
Searches for multiple words as a phrase by default.
|
north pole retrieves documents in which the words north and pole appear next to each other, in that exact order.
|
| Boolean operators |
AND, OR, NOT |
lincoln AND douglas retrieves only documents that contain both lincoln and douglas.
lincoln OR douglas retrieves documents that contain either lincoln or douglas.
|
| Proximity operators |
ADJn terms must appear within n words of one another, in any order.
|
race ADJ3 riot retrieves documents that contain the phrases race riot; race and riot in wartime LA; race, gender and riot; riot of 1921: race, reparations, and reconciliation; but not riot and the arms race.
|
