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

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

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