Perhaps you should try some spelling variations:
"international political economic studies" » "international politics economic studies", "international political economy studies", "international political economic success", "international political economic survey"
"international political economics theory" » "international politics economics theory", "international political economits theory", "international political economy theory", "international political economys theory", "international political economic theory", "international political economics history"
"international political economies series" » "international politics economies series", "international political economy series", "international politics economics series", "international political ideologies series", "international political economics series", "international political economic series"

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