Perhaps you should try some spelling variations:
"support how international airport." » "support how international transport.", "support how international airshow.", "support new international airport.", "support law international airport.", "support from international airport.", "support low international airport.", "support tool international airport."
"support area conservation efforts." » "support water conservation efforts.", "support ocean conservation efforts.", "support fuel conservation efforts.", "support from conservation efforts.", "support a conservation efforts."

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

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