Perhaps you should try some spelling variations:
"supply school cooperation efforts." » "supply school conservation efforts.", "supply school cooperation forms.", "supply school collection efforts.", "supply school operation efforts.", "supply school operations efforts.", "supply school completion efforts.", "supplies school cooperation efforts.", "support school cooperation efforts.", "supply shock cooperation efforts."
"supply chain integration series." » "supply chain integration services.", "supply chain interaction series.", "supply chain integration server."

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 series.") OR ("supply school cooperation efforts."))~.
• Removing quotes may allow a broader search: (( supply chain integration series. ) or ( supply school cooperation efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration series.") or ("supply school cooperation efforts."))*.