Perhaps you should try some spelling variations:
"supply water insemination services." » "supply water sanitation services.", "supply water information services.", "supply water navigation services.", "supply water contamination services."
"supply annual irrigation schemes." » "supply annual irrigation scheme.", "supply annual irrigation systems.", "supply canal irrigation schemes.", "supply annual variation schemes.", "supply annual inflation schemes.", "supplies annual irrigation schemes.", "supply ann irrigation schemes."

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

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