Perhaps you should try some spelling variations:
"support data irrigation schemes." » "support data irrigation scheme.", "support data irrigation systems.", "support canal irrigation schemes.", "support water irrigation schemes.", "support spate irrigation schemes.", "import data irrigation schemes.", "support a irrigation schemes.", "export data irrigation schemes."
"supply under irrigation system." » "supply under irrigation systems.", "supply under irrigation water.", "supply under irrigation scheme.", "supply water irrigation system.", "supply led irrigation system.", "supply side irrigation system.", "supply sides irrigation system."

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