Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid 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 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 chain integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply gain integrated policies.") OR ("supply chain integration theories."))*.
• Removing quotes may allow a broader search: (( supply gain integrated policies. ) or ( supply chain integration theories. ))*.