Perhaps you should try some spelling variations:
"international policy economy series" » "international poverty economy series", "international prices economy series", "national policy economy series", "international policy autonomy series", "international poppy economy series", "international political economy series"
"international policy economic theories" » "international poverty economic theories", "international prices economic theories", "national policy economic theories", "international policy economic theory"

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