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

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