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 asian integration scheme." » "supply asian integration schemes.", "supply asian integration some.", "supply asian irrigation scheme.", "supply urban integration scheme.", "supply american integration scheme.", "supply spatial integration scheme.", "supply side integration scheme.", "supply asset integration scheme."

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