Search Tips

 
Plus (+) Precede all your search terms with a plus (+) symbol to perform an AND search.
  • +maternal +health will find all documents that contain both "maternal" and "health".
  • +maternal health will find all documents that contain "maternal" and possibly "health".
OR If you do not specify an operator between search terms, OR will be used by default.
  • maternal health will find all documents that contain "maternal" or "health".
  • health OR maternal will provide the same results.
NOT Precede your search term with a minus (-) symbol to exclude documents that contain that word, or alternatively, use the word NOT.
  • +maternal -health will find all documents that contain "maternal", but not "health".
  • maternal NOT health will provide the same results.
Grouping Use parentheses to form sub-queries.
  • (supply OR sanitation) AND water will find all documents that contain "water" and either "supply" or "sanitation".
Phrases Find a phrase by surrounding multiple words in quotes.
  • "water quality control" will find documents that contain those three words together in that order.
Wildcards Match for words that contain 0 or more characters within or after the search term (note that wildcards cannot appear at the beginning of a search term).
  • * matches 0 or more characters of any kind.
  • ? matches 0 or 1 character of any kind.
  • te?t will find all documents that contain, for example, "test" and "text".
  • test? will find all documents that contain, for example, "test" and "tests".
  • test* will find all documents that contain, for example, "test", "tests", "tested", "testing", etc.
  • atmosp* will find all documents that contain those characters, e.g. "atmosphere", "atmospheric", etc.
Fuzzy Search Follow your query with the tilde (~) symbol to find documents with words that are "similar" to a given search term.
  • roam~ will find documents that contain the keyword "foam" or "roam" or "roams".