Perhaps you should try some spelling variations:
"supply trade international policies." » "supply trade international politics.", "supply trade international prices.", "supply trade international policy.", "supply care international policies.", "supply private international policies.", "supply states international policies.", "supply side international policies.", "supply case international 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 trade integration theories.") or ("supply trade international policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply trade integration theories.") OR ("supply trade international policies.")).
• Removing quotes may allow a broader search: (( supply trade integration theories. ) or ( supply trade international policies. )).
• Adding a wildcard symbol may retrieve word variants: (("supply trade integration theories.") or ("supply trade international policies."))*.