Perhaps you should try some spelling variations:
"supply curve international efforts." » "supply curve international airports.", "supply curve international energy.", "supply curve international airport.", "supply survey international efforts.", "supply care international efforts.", "supply turkey international efforts."
"supply chain integration theory." » "supply chain integration through.", "supply chain information theory.", "supply chain integration report.", "supply trade integration theory.", "supply data integration theory.", "supply grid integration theory."

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

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