Perhaps you should try some spelling variations:
"international ecological economics series" » "international technological economics series", "international psychological economics series", "international economics economics series", "international ecological economic series"
"international policy economy theories" » "international poverty economy theories", "international prices economy theories", "national policy economy theories", "international policy economic theories", "international policy economics theories", "international policy economy series", "international polish economy theories", "international politics economy theories"

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