Perhaps you should try some spelling variations:
"supply trade integration theories." » "supply trade integration theory.", "supply trade integration through.", "supply trade integration efforts.", "supply side integration theories.", "supply case integration theories."
"supply crowd integration schemes." » "supply crowd irrigation schemes.", "supply crowd integration some.", "supply grid integration schemes.", "supply chain integration schemes.", "supply urban integration schemes.", "supply growth integration schemes.", "supply cost integration schemes.", "supply how integration schemes."

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