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 "childbearing population", enclose the phrase in quotes.
Please refer to the following examples:

• Search for Giza to find all series that contain Giza.
• Search for Male or Female to find all series that contain either Male or Female indicators.
• Search for Male and Giza to find all series that contain both Male and Giza indicators.
• Search for (Male or Female) "childbearing population" to find all series that contain either Male or Female indicators or the phrase "childbearing population".