Advanced query syntax:
- and or not near for boolean queries, ()
- " (double quotes) for "phrase searches"
- ? or * for wilcard truncation (? = exactly 1 character, * = 0, 1 or more characters).
- ~ or - to exclude words (space tilde word or space minus word)
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Query examples:
- apple and pear
- pine-apple or pineapple or ananas
- diseases not virus
- (grape near wine) or (grapevines)
- "arid land"
- tomat*
- tropic* ~subtropic*
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