Perhaps you should try some spelling variations:
"supply cost international competition." » "supply cost international cooperation.", "supply cost international competitiveness.", "supply cost international comparisons.", "supply costs international competition.", "supply first international competition.", "supply joint international competition."
"supply led irrigation scheme." » "supply led irrigation systems.", "supply _ irrigation scheme.", "supply scale irrigation scheme.", "supply water irrigation scheme.", "supply low irrigation scheme.", "supply needs irrigation scheme.", "supply lines irrigation scheme."

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

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