Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
trade international » care international, private international, states international
green innovation » open innovation, gender innovation, model innovation
supply trade » supply side, supply case
supply green » supply urban

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 trade international efforts. ) OR ( supply green innovation house. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply trade international efforts. ) or ( supply green innovation house. ))*.