Perhaps you should try some spelling variations:
"supply trade integration efforts." » "supply trade international efforts.", "supply trade conservation efforts.", "supply side integration efforts.", "supply case integration efforts."
"support grid irrigation schemes." » "support grid irrigation scheme.", "support grid irrigation systems.", "support drip irrigation schemes.", "support syria irrigation schemes.", "support crop irrigation schemes.", "support agri irrigation schemes.", "support grant irrigation schemes.", "support group irrigation schemes."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grid irrigation schemes.") OR ("supply trade integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support grid irrigation schemes.\") OR (\"supply trade integration efforts.\"))*".
• Removing quotes may allow a broader search: (( support grid irrigation schemes. ) OR ( supply trade integration efforts. ))*.