Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"supply facto integration schemes." » "supply facto irrigation schemes.", "supply facto integration some.", "supply factor integration schemes.", "supply faculty integration schemes.", "supply sector integration schemes.", "supply factors integration schemes.", "supply data integration schemes."

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