Perhaps you should try some spelling variations:
"international openness economies twenty" » "international roughness economies twenty", "international business economies twenty", "international agencies economies twenty", "international open economies twenty", "international openness economies theory", "international openness economies ten", "international openness economies country"
"international based economy fierce" » "international case economy fierce", "international bank economy fierce", "international best economy fierce", "international based economy evidence", "international closed economy fierce", "international mixed economy fierce", "international blue economy fierce"

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 openness economies twenty") OR ("international based economy fierce"))~.
• Removing quotes may allow a broader search: (( international openness economies twenty ) or ( international based economy fierce ))~.
• Adding a wildcard symbol may retrieve word variants: (("international openness economies twenty") or ("international based economy fierce"))*.