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

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