Truncating terms to get multiple forms of a word from the truncation symbol (*) onward:
-- example: truncating pharmac* with the asterisk (*) placed after the letter c will retrieve any form of the word from the asterisk (*) onward, including pharmaceutical, pharmaceuticals, pharmacology, pharmacological
Phrase searching to retrieve two or more words together in exact order: use quotation marks around the phrase:
-- example: "traditional ecological knowledge" --- searching this term with quotation marks around all three words will retrieve these three words together in this EXACT order
Alternative term(s)/Synonym/Antonym searching: use parentheses to enclose terms that you connect with the word "or":
-- example: (BMI or "body mass index" or obes*) ----- this example combines PHRASE searching with TRUNCATION searching as well as searching for alternative ways to express a concept --- hence, the parentheses enclosing all of the terms, with each term connecting to the next with an "or"