Perhaps you should try some spelling variations:
"slopes measuring international efforts." » "slopes security international efforts.", "slopes marketing international efforts.", "slopes measuring national efforts.", "slopes measuring international energy.", "slopes measuring international airport.", "slopes measuring international support.", "schools measuring international efforts.", "cities measuring international efforts."
"supply private international airports." » "supply private international airport.", "supply private international transport.", "supply private international airshow.", "supply private information airports.", "supply china international airports.", "supply first international airports."

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: (("slopes measuring international efforts.") OR ("supply private international airports."))~.
• Removing quotes may allow a broader search: (( slopes measuring international efforts. ) or ( supply private international airports. ))~.
• Adding a wildcard symbol may retrieve word variants: (("slopes measuring international efforts.") or ("supply private international airports."))*.