Perhaps you should try some spelling variations:
"supply trade integration schemes." » "supply trade integration schengen.", "supply trade integration regimes.", "supply trade integration some.", "supply case integration schemes."
"Supply pradesh irrigation schemes." » "Supply pradesh irrigation scheme.", "Supply pradesh irrigation systems."
supply pradesh » supply process

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply trade integration schemes.") OR ("Supply pradesh irrigation schemes."))~.
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