Perhaps you should try some spelling variations:
"international political economy series" » "international politics economy series"
"international political economic series" » "international politics economic series", "international political economies series", "international political economic theories", "international political economic studies"
"international political economics series" » "international politics economics series", "international political economies series", "international political economits series"
"International political economic success" » "International political economic systems", "International political economic survey"

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 political economy series") OR ((((("international political economic series") OR ("International political economic success"))) OR ("international political economics series"))))~.
• Removing quotes may allow a broader search: (( international political economy series ) or ((((( international political economic series ) or ( International political economic success ))) or ( international political economics series ))))~.
• Adding a wildcard symbol may retrieve word variants: (("international political economy series") or ((((("international political economic series") or ("International political economic success"))) or ("international political economics series"))))*.