Perhaps you should try some spelling variations:
"Supply grid integration theories." » "Supply grid integration theory.", "Supply grid integration through.", "Supply grid integration reforms.", "Supply trade integration theories.", "Supply _ integration theories.", "Supply data integration theories."
"supply chain integration efforts." » "supply chain international efforts.", "supply chain conservation efforts.", "supply trade integration efforts.", "supply data integration efforts."
supply grid » supply crowd, support grid

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 theories.") OR ("supply chain integration efforts."))~.
• Removing quotes may allow a broader search: (( Supply grid integration theories. ) or ( supply chain integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("Supply grid integration theories.") or ("supply chain integration efforts."))*.