Let's say you're interested in the role of the collard greens in Black foodways.
Step 1: Break up this idea into two or three main concepts. Ignore extraneous words.
Step 2: Conduct an initial search with these words, and quickly scan the results.
Step 3: Using information from your initial search, add synonyms, acronyms, and variant spellings.
Know the logic behind your search
culture, cultural history, historical social, society
economic, labor eating, culinary, gastronomic, cuisine, cooking
habits, practices traditions family, families
Come up with your own as well!