Perhaps you should try some spelling variations:
"international political economic series" » "international politics economic series", "international political economy series", "international political economic studies", "international political economic surveys"
"international political economic theories" » "international politics economic theories", "international political economic theory", "international political economics theory", "international political economic ties"
"international political economics series" » "international politics economics series", "international political economits series", "international politico economic series", "international political economy series"
"international political economy theories" » "international politics economy theories", "international political economy series", "international political economy theory", "international political economy theorizing"
"international political economies series" » "international politics economies series", "international politics economics series", "international political ideologies series", "international political economy series", "international political economies verghese", "international political economies crisis"

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 series") OR ("international political economic theories"))) OR ("international political economics series"))) OR ("international political economy theories"))) OR ("international political economies series"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"international political economic series\") OR (\"international political economic theories\"))) or (\"international political economics series\"))) or (\"international political economy theories\"))) or (\"international political economies series\"))~".
• Removing quotes may allow a broader search: (((((((( international political economic series ) OR ( international political economic theories ))) or ( international political economics series ))) or ( international political economy theories ))) or ( international political economies series ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((("international political economic series") OR ("international political economic theories"))) or ("international political economics series"))) or ("international political economy theories"))) or ("international political economies series"))*.