Perhaps you should try some spelling variations:
"international political economic surveys" » "international policy economic surveys", "international ecological economics surveys", "international political economic studies", "international political economic systems"
"International political economy theories" » "International political economic theories", "International political economics theories", "International political economy series"

Try widening your search to All Fields.

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 theories") or ("international political economic surveys"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("International political economy theories") OR ("international political economic surveys")).
• Removing quotes may allow a broader search: (( International political economy theories ) or ( international political economic surveys )).
• Adding a wildcard symbol may retrieve word variants: (("International political economy theories") or ("international political economic surveys"))*.