Perhaps you should try some spelling variations:
"supply data irrigation schemes." » "supply data irrigation systems.", "supply data irrigation systemss.", "supply delta irrigation schemes.", "supply canal irrigation schemes.", "supply water irrigation schemes."
"Supply spate irrigation scheme." » "Supply spate irrigation systems.", "Supply scale irrigation scheme.", "Supply water irrigation scheme.", "Supply surge irrigation scheme."
supply spate » supply system, supply side, supply water

Try widening your search to All Fields.

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

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