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 surveys" » "international poverty economic surveys", "international prices economic surveys", "national policy economic surveys", "international policy economic survey"

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