Perhaps you should try some spelling variations:
"supply trade integrating policies." » "supply trade integration policies.", "supply trade integrated policies.", "supply trade integrating positive.", "supply true integrating policies.", "supply drama integrating policies.", "supply case integrating policies."
"supply school conservation efforts." » "supply school construction efforts.", "supply soil conservation efforts.", "supply school cooperation efforts.", "supplies school conservation efforts.", "support school conservation efforts.", "supply shock conservation efforts."

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 trade integrating policies.") OR ("supply school conservation efforts."))~.
• Removing quotes may allow a broader search: (( supply trade integrating policies. ) or ( supply school conservation efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply trade integrating policies.") or ("supply school conservation efforts."))*.