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

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