Perhaps you should try some spelling variations:
international ecological » international economics, international economic, international political
"international policy economic series" » "international poverty economic series", "international prices economic series", "national policy economic series", "international policy economic services", "international policy economic theories", "international policy economic surveys"
"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 ecological economics series") or ("international policy economic series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("International ecological economics series") OR ("international policy economic series"))*.
• Removing quotes may allow a broader search: (( International ecological economics series ) or ( international policy economic series ))*.