Perhaps you should try some spelling variations:
"supply 2nd international airports." » "supply 2nd international airport.", "supply 2nd international transport.", "supply 2nd international airshow.", "supply 2.3 international airports.", "supply 2.2 international airports.", "supply ann international airports."
"supply sites conservation efforts." » "supply situ conservation efforts.", "supply species conservation efforts.", "supply forest conservation efforts.", "supply sides conservation efforts.", "supply siders conservation efforts.", "supply side conservation efforts."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply 2nd international airports.") OR ("supply sites conservation efforts."))~.
• Removing quotes may allow a broader search: (( supply 2nd international airports. ) or ( supply sites conservation efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply 2nd international airports.") or ("supply sites conservation efforts."))*.