Perhaps you should try some spelling variations:
"international political economic studies" » "international policy economic studies", "international ecological economics studies", "international political economic status"
"international political economy services" » "international policy economy services", "international political economic services", "international political economy series", "international political recovery services"

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

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