Perhaps you should try some spelling variations:
"supply coastal conservation efforts." » "supply local conservation efforts.", "supply ecosystem conservation efforts.", "supply water conservation efforts.", "supply costs conservation efforts.", "supply cost conservation efforts."
"supply case irrigation schemes." » "supply case irrigation scheme.", "supply case irrigation systems.", "supply scale irrigation schemes.", "supply change irrigation schemes.", "supply canal irrigation schemes.", "supply cost irrigation schemes.", "supply chain irrigation schemes.", "supply curve irrigation schemes."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply case irrigation schemes.") or ("supply coastal conservation efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply case irrigation schemes.") OR ("supply coastal conservation efforts.")).
• Removing quotes may allow a broader search: (( supply case irrigation schemes. ) or ( supply coastal conservation efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("supply case irrigation schemes.") or ("supply coastal conservation efforts."))*.