Perhaps you should try some spelling variations:
"Supply grid integration efforts." » "Supply grid international efforts.", "Supply grid conservation efforts.", "Supply trade integration efforts.", "Supply _ integration efforts.", "Supply data integration efforts."
"supply chain integration series." » "supply chain integration theories.", "supply chain integrating services.", "supply chain integration schemes.", "supply trade integration series.", "supply data integration series."
supply grid » supply crowd, support grid

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration series.") OR ("Supply grid integration efforts."))~.
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