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 series" » "International ecological economic studies"

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