Perhaps you should try some spelling variations:
"supply grid integration efforts." » "supply grid international efforts.", "supply grid conservation efforts.", "supply trade integration efforts.", "supply _ integration efforts.", "supply data integration efforts.", "supply crowd integration efforts.", "support grid integration efforts."
"supply case irrigation systems." » "supply scale irrigation systems.", "supply change irrigation systems.", "supply canal irrigation systems.", "supply cost irrigation systems.", "supply chain irrigation systems.", "supply curve irrigation systems.", "supply case irrigation system."

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 case irrigation systems.") OR ("supply grid integration efforts."))~.
• Removing quotes may allow a broader search: (( supply case irrigation systems. ) or ( supply grid integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply case irrigation systems.") or ("supply grid integration efforts."))*.