Perhaps you should try some spelling variations:
"supply ghana international efforts." » "supply ghana international airports.", "supply ghana international energy.", "supply ghana international airport.", "supply china international efforts.", "supply change international efforts.", "supply pharma international efforts.", "supply chains international efforts.", "supply chain international efforts."
"supply trade integration theory." » "supply trade integration through.", "supply trade information theory.", "supply trade innovation theory.", "supply case integration theory."

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

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