Multiple terms: term1 term2
red apples
returns results with all terms like:
Fructose levels inred andgreen apples
Precise match in quotes: "term1 term2"
"red apples"
returns results matching exactly like:
Anthocyanin biosynthesis inred apples
Exclude a term with -: term1 -term2
apples -red
returns results containingapples but notred:
Malic acid in greenapples