Perhaps you should try some spelling variations:
"support trade international airport." » "support trade international transport.", "support trade international airshow.", "support care international airport.", "support private international airport.", "support states international airport.", "export trade international airport.", "support grant international airport.", "import trade international airport."
"support land conservation efforts." » "support water conservation efforts.", "support land consolidation efforts.", "support _ conservation efforts.", "support plans conservation efforts.", "support bank conservation efforts.", "support grant conservation efforts."

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