Perhaps you should try some spelling variations:
"international economies economy studies" » "international economics economy studies", "international economic economy studies", "international economy economy studies", "international economies economic studies", "international economics economic studies", "international economics economics studies"
"international political economic theories" » "international policy economic theories", "international political economy theories", "international ecological economics theories", "international political economic theory"

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

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