Perhaps you should try some spelling variations:
"supply grid integration schemes." » "supply grid irrigation schemes.", "supply grid integration some.", "supply grid integration theories.", "supply trade integration schemes.", "supply _ integration schemes.", "supply data integration schemes.", "supply crowd integration schemes.", "support grid integration schemes."
"supply chain integration theory." » "supply chain integration through.", "supply chain information theory.", "supply chain integration report.", "supply trade integration theory.", "supply data integration theory."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply chain integration theory.") or ("supply grid integration schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration theory.") OR ("supply grid integration schemes."))*.
• Removing quotes may allow a broader search: (( supply chain integration theory. ) or ( supply grid integration schemes. ))*.