Perhaps you should try some spelling variations:
"supply trade international efforts." » "supply trade international airports.", "supply trade international energy.", "supply trade international airport.", "supply care international efforts.", "supply time international efforts.", "supply private international efforts.", "supply case international efforts."
"supply trade integration theories." » "supply trade integration theorems.", "supply trade integrationstheorie 2.", "supply trade integration theory.", "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 international efforts.") or ("supply trade integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply trade international efforts.") OR ("supply trade integration theories.")).
• Removing quotes may allow a broader search: (( supply trade international efforts. ) or ( supply trade integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("supply trade international efforts.") or ("supply trade integration theories."))*.