Perhaps you should try some spelling variations:
"supply spate irrigation schemes." » "supply spate irrigation scheme.", "supply scale irrigation schemes.", "supply water irrigation schemes.", "supply surge irrigation schemes.", "supply system irrigation schemes.", "supply side irrigation schemes."
"Supply trade irrigation systems." » "Supply pradesh irrigation systems.", "Supply scale irrigation systems.", "Supply grain irrigation systems.", "Supply trade irrigation system."
supply trade » supply case

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 trade irrigation systems.") OR ("supply spate irrigation schemes."))~.
• Removing quotes may allow a broader search: (( Supply trade irrigation systems. ) or ( supply spate irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (("Supply trade irrigation systems.") or ("supply spate irrigation schemes."))*.