Perhaps you should try some spelling variations:
international policy » international poverty, international prices, national policy
"international political economic series" » "international political economy series", "international ecological economics series", "international political economics series", "international political economic services"
"International policy economic surveys" » "International policy economic studies", "International policy economic systems"

You may be able to get more results by adjusting your search query.

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