Perhaps you should try some spelling variations:
international policy » international poverty, international prices, national policy
"International policy economic series" » "International policy economics series", "International policy economic services", "International policy economic theories"
"International policy economy series" » "International polish economy series", "International politics economy series", "International policy economics 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 economic series") OR ("International policy economy series"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"International policy economic series\") OR (\"International policy economy series\"))".
• Removing quotes may allow a broader search: (( International policy economic series ) OR ( International policy economy series )).
• Adding a wildcard symbol may retrieve word variants: (("International policy economic series") OR ("International policy economy series"))*.