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

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