Example: search "tomato" and limit to topic overview to find out how it is manufactured.
Example: search candy and factory, limit to magazines to find articles about candy manufacturing.
When you are searching in a library database, such as the two listed above, combine your search terms with AND or OR.
Narrow your search by suing AND between concepts you want to include
Example: tomato and farming
Broaden your search by using OR between synonyms
Example: tomato and farming or agriculture
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