Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
chain international » chains international, main international, can international
integration social » international social
fruhe integration » trade integration, fare integration, re integration
supply fruhe » supply figure, supply from

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 chain international efforts. ) OR ( supply fruhe integration social. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply chain international efforts. ) or ( supply fruhe integration social. ))*.