Perhaps you should try some spelling variations:
"international open economics theory" » "international hope economics theory", "international order economics theory", "international scope economics theory", "international open economic theory", "international open econometric theory", "international open economics history", "international open economies theory", "international modern economics theory", "international green economics theory"
"international business economy fierce" » "international business entry fierce", "international business economy finance", "international business economy field", "international business economy figure"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("international open economics theory") or ("international business economy fierce"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international open economics theory") OR ("international business economy fierce"))*.
• Removing quotes may allow a broader search: (( international open economics theory ) or ( international business economy fierce ))*.