Perhaps you should try some spelling variations:
"supply curve integration theories." » "supply curve integration theorems.", "supply curve integrationstheorie 2.", "supply curve integration theory.", "supply care integration theories.", "supply burke integration theories.", "supply curvello integration theories."
"supply case integration efforts." » "supply case international efforts.", "supply case conservation efforts.", "supply care integration efforts.", "supply scale integration efforts.", "supply based integration efforts.", "supply cost integration efforts.", "supply chain integration efforts.", "supply costs integration efforts."

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 curve integration theories.") OR ("supply case integration efforts."))~.
• Removing quotes may allow a broader search: (( supply curve integration theories. ) or ( supply case integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply curve integration theories.") or ("supply case integration efforts."))*.