Perhaps you should try some spelling variations:
"international policy economic series" » "international poverty economic series", "international prices economic series", "national policy economic series", "international policy economics series", "international policy economic services", "international policy economic theories"
"international power economy series" » "international poverty economy series", "international ports economy series", "international panel economy series", "international power economics series", "international power economic series", "international poor economy series", "international war economy 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 power economy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international policy economic series") OR ("international power economy series"))*.
• Removing quotes may allow a broader search: (( international policy economic series ) or ( international power economy series ))*.