Perhaps you should try some spelling variations:
"supply large irrigation scheme." » "supply large irrigation systems.", "supply farm irrigation scheme.", "supply drip irrigation scheme.", "supply scale irrigation scheme.", "supply charges irrigation scheme.", "supply targets irrigation scheme.", "supply curve irrigation scheme."
"supply count testing services." » "supply count existing services.", "supply count lending services.", "supply count training services.", "supply couple testing services.", "supply ground testing services.", "supply unit testing services.", "supply cost testing services.", "supply costs testing services.", "supply china testing services."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply large irrigation scheme.") OR ("supply count testing services."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply large irrigation scheme.\") OR (\"supply count testing services.\"))".
• Removing quotes may allow a broader search: (( supply large irrigation scheme. ) OR ( supply count testing services. )).
• Adding a wildcard symbol may retrieve word variants: (("supply large irrigation scheme.") OR ("supply count testing services."))*.