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 factor integrating policies." » "supply factor international policies.", "supply factor integrating countries.", "supply factor immigration policies.", "supply factor integration policies.", "supply facto integration policies.", "supply faso integrating policies.", "supply factors integrating policies.", "supply sector integrating policies.", "supply water integrating policies."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply chain integration theories.") or ("supply factor integrating policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theories.") OR ("supply factor integrating policies.")).
• Removing quotes may allow a broader search: (( supply chain integration theories. ) or ( supply factor integrating policies. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") or ("supply factor integrating policies."))*.