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 1 international airport.", "support had international airport.", "support his international airport.", "support come international airport."
"support from conservation efforts." » "support farms conservation efforts.", "support fuel conservation efforts.", "support from construction 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 from conservation efforts.") OR ("support how international airport."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support from conservation efforts.\") OR (\"support how international airport.\"))".
• Removing quotes may allow a broader search: (( support from conservation efforts. ) OR ( support how international airport. )).
• Adding a wildcard symbol may retrieve word variants: (("support from conservation efforts.") OR ("support how international airport."))*.