Perhaps you should try some spelling variations:
"supply chain international efforts." » "supply chain international airports.", "supply chain international energy.", "supply chain international airport.", "supply china international efforts.", "supply can international efforts.", "supply sharing international efforts."
"supply basin irrigation schemes." » "supply basin irrigation scheme.", "supply basin irrigation systems.", "supply drip irrigation schemes.", "supply canal irrigation schemes.", "supply farm irrigation schemes.", "supply case irrigation 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 basin irrigation schemes.") OR ("supply chain international efforts."))~.
• Removing quotes may allow a broader search: (( supply basin irrigation schemes. ) or ( supply chain international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply basin irrigation schemes.") or ("supply chain international efforts."))*.