Perhaps you should try some spelling variations:
"support grid integration theories." » "support grid integration theory.", "support grid integration through.", "support grid integration reforms.", "support trade integration theories.", "support _ integration theories.", "support data integration theories.", "support agri integration theories.", "support grant integration theories.", "support group integration theories."
"supply crowd integration efforts." » "supply crowd international efforts.", "supply crowd conservation efforts.", "supply trade integration efforts.", "supply chain integration efforts.", "supply urban integration efforts.", "supply growth integration efforts.", "supply cost integration efforts.", "supply how integration efforts."

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