Perhaps you should try some spelling variations:
internationale airports » international airports, international airport, international ports
international efforts » international airports, international energy, international airport
cause internationale » case international, das internationale, als internationale
a international » a internationale, da international, 1 international
supply cause » supply case, supply curve, supply cost
supply a » supply _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply a international efforts. ) or ( supply cause internationale airports. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply a international efforts. ) OR ( supply cause internationale airports. )).
• Adding a wildcard symbol may retrieve word variants: (( supply a international efforts. ) or ( supply cause internationale airports. ))*.