Perhaps you should try some spelling variations:
"supply ocean conservation efforts." » "supply ocean observation efforts.", "supply local conservation efforts.", "supply area conservation efforts.", "supply chain conservation efforts.", "supply oecd conservation efforts.", "supply chai conservation efforts."
"supply trade irrigation schemes." » "supply trade irrigation scheme.", "supply trade irrigation systems.", "supply pradesh irrigation schemes.", "supply scale irrigation schemes.", "supply grain 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 ocean conservation efforts.") OR ("supply trade irrigation schemes."))~.
• Removing quotes may allow a broader search: (( supply ocean conservation efforts. ) or ( supply trade irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply ocean conservation efforts.") or ("supply trade irrigation schemes."))*.