You can use the Boolean operators AND (also + or &), OR and NOT (also -) within search fields. These operators must be entered in UPPERCASE to work.
If more than one term is entered, and no operators are specified, terms are searched using AND. To search for a phrase, put the terms in quotes. For example, spinal cord searches spinal AND cord while “spinal cord” finds this exact phrase.
Use a question mark (?) in a search term to represent a single character (wom?n finds women or woman). Use an asterisk (*) to represent zero or more characters. For example, plant* finds all words with that root (plant, plants, & planting) while an*mia finds variants with one or more letters (anemia & anaemia). Wildcards CANNOT be used at the start of a search term (*tension) or when searching for phrases in quotes (“tobacco smok*”).
Author names may appear with full first names or just initials. Place author names in quotes to find a specific name and its variants. For example, “John Smith” finds articles by John Smith, John K Smith and John Colby-Smith while “J Smith” finds articles by J Smith, JR Smith, John Smith and Julie Smith.