Perhaps you should try some spelling variations:
"supply cost international commerce." » "supply cost international conference.", "supply cost international committee.", "supply cost international community.", "supply costs international commerce.", "supply costea international commerce.", "supply 1st international commerce."
"supply led irrigation scheme." » "supply led irrigation systems.", "supply _ irrigation scheme.", "supply scale irrigation scheme.", "supply water irrigation scheme.", "supply law irrigation scheme.", "supply low irrigation scheme.", "supply based 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 commerce.") or ("supply led irrigation scheme."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply cost international commerce.") OR ("supply led irrigation scheme.")).
• Removing quotes may allow a broader search: (( supply cost international commerce. ) or ( supply led irrigation scheme. )).
• Adding a wildcard symbol may retrieve word variants: (("supply cost international commerce.") or ("supply led irrigation scheme."))*.