Perhaps you should try some spelling variations:
international based » international case, international cases, international basic
international open » international hope, international order, international scope
economies twenty » economies theory, economies ten, economies country
open economies » open economy
economy fierce » economy finance, economy field, economy figure
based economy » closed economy, mixed economy

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 open economies twenty ) OR ( international based economy fierce ))~.
• Adding a wildcard symbol may retrieve word variants: (( international open economies twenty ) or ( international based economy fierce ))*.