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 gain integrated policies." » "supply gain integrating policies.", "supply gain integrated policy.", "supply gain integrated logistics.", "supply gambia integrated policies.", "supply china integrated policies.", "supply ii integrated policies.", "supply chain integrated policies.", "supply gap integrated policies.", "supply chains integrated policies."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply gain integrated policies.") or ("supply trade integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply gain integrated policies.") OR ("supply trade integration theories."))*.
• Removing quotes may allow a broader search: (( supply gain integrated policies. ) or ( supply trade integration theories. ))*.