Perhaps you should try some spelling variations:
"supply great integration efforts." » "supply great international efforts.", "supply great conservation efforts.", "supply et integration efforts.", "supply test integration efforts.", "supply text integration efforts.", "supply gap integration efforts.", "supply gas integration efforts."
"supply growth irrigation schemes." » "supply growth irrigation scheme.", "supply growth irrigation systems.", "supply gravity irrigation schemes.", "supply growth correlation schemes.", "supply through irrigation schemes."

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