Perhaps you should try some spelling variations:
"supply case integration theories." » "supply case integration theory.", "supply case integration through.", "supply case integration reforms.", "supply care integration theories.", "supply fare integration theories.", "supply can integration theories.", "supply cost integration theories.", "supply chain integration theories.", "supply curve integration theories."
"supply trade integration efforts." » "supply trade international efforts.", "supply trade conservation efforts.", "supply side integration efforts."

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