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 price autonomy series" » "international prices autonomy series", "international center autonomy series", "international price astronomy series", "international price autonomy states", "international price autonomy survey", "international private autonomy series", "international policy autonomy series", "international driven autonomy series"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("international policy economy series") or ("international price autonomy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international policy economy series") OR ("international price autonomy series")).
• Removing quotes may allow a broader search: (( international policy economy series ) or ( international price autonomy series )).
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