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

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