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

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