Perhaps you should try some spelling variations:
"supply through integrating policies." » "supply through international policies.", "supply through integrating countries.", "supply through immigration policies.", "supply through integration policies.", "support through integrating policies."
"supply trade integration theories." » "supply trade integration theory.", "supply trade integration through.", "supply trade integration efforts.", "supply side integration theories.", "supply case integration theories."

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

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