Perhaps you should try some spelling variations:
"international political economic theories" » "international politics economic theories", "international political economic theory", "international political economics series", "international political economic ties"
"international political economics theory" » "international politics economics theory", "international political economies theory", "international political economits theory", "international political economic theory", "international political economics history"
"international political economy series" » "international politics economy series"
"international relations economic studies" » "international relations conflict studies", "international innovations economic studies", "international relations economic success", "international relations 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 relations economic studies") OR ((("international political economic theories") OR ("international political economics theory"))))) OR ("international political economy series"))~.
• Removing quotes may allow a broader search: (((( international relations economic studies ) or ((( international political economic theories ) or ( international political economics theory ))))) or ( international political economy series ))~.
• Adding a wildcard symbol may retrieve word variants: (((("international relations economic studies") or ((("international political economic theories") or ("international political economics theory"))))) or ("international political economy series"))*.