Perhaps you should try some spelling variations:
"supply toward integrating policies." » "supply toward international policies.", "supply toward integrating countries.", "supply toward immigration policies.", "supply toward integrated policies.", "supply towards integrated 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 toward integrating policies.") OR ("supply trade integration theories."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply toward integrating policies.\") OR (\"supply trade integration theories.\"))".
• Removing quotes may allow a broader search: (( supply toward integrating policies. ) OR ( supply trade integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply toward integrating policies.") OR ("supply trade integration theories."))*.