Perhaps you should try some spelling variations:
"support mega irrigation schemes." » "support mega irrigation scheme.", "support mega irrigation systems.", "support led irrigation schemes.", "support high irrigation schemes.", "support well irrigation schemes.", "support a irrigation schemes.", "support data irrigation schemes.", "support deep irrigation schemes."
"support crops testing services." » "support crops lending services.", "support crops training services.", "support crops banking services.", "support cross testing services.", "support groups testing services.", "export crops testing services.", "support cross listing services."

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: (("support mega irrigation schemes.") or ("support crops testing services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support mega irrigation schemes.") OR ("support crops testing services.")).
• Removing quotes may allow a broader search: (( support mega irrigation schemes. ) or ( support crops testing services. )).
• Adding a wildcard symbol may retrieve word variants: (("support mega irrigation schemes.") or ("support crops testing services."))*.