Perhaps you should try some spelling variations:
"international political economy theories" » "international policy economy theories", "international political economic theories", "international political economics theories", "international political economy series"
"international poverty economic series" » "national poverty economic series", "international property economic series", "international forestry economic series", "international policy economic series", "international poverty economics series", "international poverty economic services", "international poverty economy series"

You may be able to get more results by adjusting your search query.

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