Use AND in your search to:
Example: food insecurity AND developing countries
Use OR in your search to:
Example: policy OR legislation
* Add an asterisk onto the root of a word to find results that use all variations of that word.
Example: label* = label, labels, labeling
"..." Place quotation marks around search terms or a search phrase to search for that EXACT phrase.
Example: "slow food movement" or "genetically modified foods"
(...) Use parentheses to nest similar terms or to ensure the database will search your terms in the correct order.
Example: "genetically modified foods" AND (policy OR legislation)
Use NOT in your search to:
Example: "food insecurity" NOT "food desert"