Perhaps you should try some spelling variations:
"supply shadow integrating countries." » "supply shadow importing countries.", "supply shadow immigration countries.", "supply shadow integrating culture.", "supply shallow integration countries.", "supply how integrating countries."
"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 shadow integrating countries.") OR ("supply chain integration theory."))~.
• Removing quotes may allow a broader search: (( supply shadow integrating countries. ) or ( supply chain integration theory. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply shadow integrating countries.") or ("supply chain integration theory."))*.