Perhaps you should try some spelling variations:
"supply grid international airport." » "supply grid international transport.", "supply grid international airshow.", "supply 3rd international airport.", "supply third international airport.", "supply build international airport.", "supply crowd international airport.", "supply great international airport.", "support grid international airport."
"supply trade integration efforts." » "supply trade international efforts.", "supply trade conservation efforts.", "supply case integration efforts."

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

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