Use the operator AND in all caps between each of the terms or phrases you want to find in the materials you are searching for, and use double quotation marks " " around phrases that are two or more words.
Locate associated gene(s) by searching for traits, characteristics, conditions, or phenotypes.
In this sample search the term dimorphic, or dimorphism is truncatated to include only the root of the word (dimorph*), then followed by an aterick*. This search technique is used to search for variations of spelling and tense for the keywords you need to find.