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Use the Boolean operators AND, OR, & NOT with your keywords or phrases to create a search
- AND narrows your search to produce fewer results
- OR expands your search to give you more results
- NOT excludes a concept and will narrow your search
Topic: Are safe injection sites a good response to the opioid crisis?
Combine synonyms with OR to expand your search: Opiates or Opioid
Combine concepts with AND to narrow your search: Safe injection sites and opiates
This is what a search would look like in a database: