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 crowd integration efforts.", "support grid integration efforts."
"supply based information theory." » "supply based innovation theory.", "supply land information theory.", "supply care information theory.", "supply case information theory.", "supply water information theory.", "survey based information theory."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply grid integration efforts.") OR ("supply based information theory."))~.
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• Adding a wildcard symbol may retrieve word variants: (("supply grid integration efforts.") or ("supply based information theory."))*.