Perhaps you should try some spelling variations:
"international political economic series" » "international policy economic series", "international political economy series", "international ecological economics series", "international political economic services", "international political economic surveys", "international political economic studies"
"international poverty economic theories" » "national poverty economic theories", "international best economic theories", "international poverty economic theory", "international policy economic theories", "international energy economic 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 political economic series") or ("international poverty economic theories"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic series") OR ("international poverty economic theories")).
• Removing quotes may allow a broader search: (( international political economic series ) or ( international poverty economic theories )).
• Adding a wildcard symbol may retrieve word variants: (("international political economic series") or ("international poverty economic theories"))*.