Perhaps you should try some spelling variations:
"international politics economy series" » "international relations economy series", "international political economy series", "international politics economics series"
"international political economits series" » "international political economies series", "international political economics series", "international political economy series", "international political concepts series"
"international political economic series" » "international political economy series", "international political economics series", "international political economies series", "international political economic theories"

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

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