Perhaps you should try some spelling variations:
"support grid international efforts." » "support grid international airports.", "support grid international energy.", "support grid international airport.", "support 3rd international efforts.", "support third international efforts.", "support build international efforts.", "support agri international efforts.", "support grant international efforts.", "support group international efforts."
"supply rural irrigation systems." » "supply murray irrigation systems.", "supply canal irrigation systems.", "supply gray irrigation systems.", "supply curve irrigation systems.", "supply rural irrigation system."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("supply rural irrigation systems.") or ("support grid international efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply rural irrigation systems.") OR ("support grid international efforts.")).
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