Here's the true story of how I approached doing review paper on a topic in plant biology:
'How do circadian rhythms in floral scent emission affect pollination'?
Example
How do circadian rhythms in floral scent emission affect pollination?
Step 1: Break up this research question into its main concepts. Ignore extraneous words.
Step 3: Using information from your initial search, add synonyms, acronyms, and variant spellings.
(circadian OR temporal) AND (scent OR volatiles) AND (pollination)