Perhaps you should try some spelling variations:
"supply grid integration efforts." » "supply grid international efforts.", "supply grid conservation efforts.", "supply crowd integration efforts.", "supply great integration efforts.", "support grid integration efforts."
"supply school integration theory." » "supply school integration through.", "supply school information theory.", "supply school innovation theory.", "supply school reintegration theory.", "supply school integrating theory.", "supply school interactions theory.", "supplies school integration theory.", "support school integration theory.", "supply shock integration 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 school integration theory.") OR ("supply grid integration efforts."))~.
• Removing quotes may allow a broader search: (( supply school integration theory. ) or ( supply grid integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply school integration theory.") or ("supply grid integration efforts."))*.