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

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 economic surveys"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"International political economic services\") OR (\"International political economic surveys\"))".
• Removing quotes may allow a broader search: (( International political economic services ) OR ( International political economic surveys )).
• Adding a wildcard symbol may retrieve word variants: (("International political economic services") OR ("International political economic surveys"))*.