Perhaps you should try some spelling variations:
international scale » international sales, international social, international seabed
international ports » international airports, international poverty, international efforts
scale economies » income economies
economies emdes » economies under, economies versus
economic elites » economic realities, economic crises, economic crimes
ports economic » airports economic, its economic, roads economic

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