Truncation |
Asterisk: * |
child* retrieves records with "child", "children", "childbirth", "childbearing", "childish", and so forth.
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Wildcard (Single character) |
Question mark: ?
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m?nchen retrieves records with "München" or "Munchen".
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Phrases |
Quation marks: "word1 word2"
Default: AND operators between words
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"north pole" retrieves only records in which the words "north" and "pole" appear next to each other, in that exact order.
north pole--without quotation marks--retrieves articles with both words "north" and "pole", regardless of where the appear in the document.
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Boolean operators |
AND, OR, NOT.
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lincoln AND douglas retrieves articles that contain both "lincoln" and "douglas".
lincoln OR douglas retrieves articles that contain either "lincoln" or "douglas".
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Proximity operators |
"word1 word2"~n terms inside the quotation marks must appear within n words of eachother, in the specified order.
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"henry thoreau"~2 retrieves "henry thoreau", "henry david thoreau", but not "thoreau, henry david".
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