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 economic series", "international polish economy series", "international politics economy series", "international policy economics series"
"international rich economy series" » "international rice economy series", "international price economy series", "international risk economy series", "international rich economics series", "international rich economies series", "international french economy series", "international cash 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 policy economy series") or ("international rich economy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international policy economy series") OR ("international rich economy series")).
• Removing quotes may allow a broader search: (( international policy economy series ) or ( international rich economy series )).
• Adding a wildcard symbol may retrieve word variants: (("international policy economy series") or ("international rich economy series"))*.