Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
international scale » international sales, international scope, international social
efforts economic » effects economics, sports economic, affects economic
scale economies » income economies
economic elites » economic realities, economic reality

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: (( international scale economies emdes ) OR ( international efforts economic elites ))~.
• Adding a wildcard symbol may retrieve word variants: (( international scale economies emdes ) or ( international efforts economic elites ))*.