Search string may contain the logical operators AND and OR and the operands () and "". AND searches for both words or phrases, while OR searches for one or the other. If the search string uses AND and OR at the same time, the AND operation takes priority, unless you enclose the OR operation in parentheses, as in (A or B) and C. To find an exact phrase, such as "gambia population", enclose the phrase in quotes.
Please refer to the following examples:

  • Search for Western to find all series that contain Western.
  • Search for Male or Female to find all series that contain either Male or Female indicators.
  • Search for Male and Female to find all series that contain both Male and Female indicators.
  • Search for (Male or Female) "Gross enrolment ratio" to find all series that contain either Male or Female indicators or the phrase "Gross enrolment ratio".
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