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

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