Perhaps you should try some spelling variations:
"support grid integration efforts." » "support grid international efforts.", "support grid conservation efforts.", "support trade integration efforts.", "support _ integration efforts.", "support data integration efforts.", "support agri integration efforts.", "support grant integration efforts.", "support group integration efforts."
"supply from irrigation schemes." » "supply from irrigation scheme.", "supply from irrigation systems.", "supply farm irrigation schemes.", "supply crop irrigation schemes.", "supply furrow irrigation schemes.", "support from 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 from irrigation schemes.") OR ("support grid integration efforts."))~.
• Removing quotes may allow a broader search: (( supply from irrigation schemes. ) or ( support grid integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply from irrigation schemes.") or ("support grid integration efforts."))*.