Perhaps you should try some spelling variations:
"international political economic series" » "international politics economic series", "international political economy series", "international political economics series", "international political economic studies"
"international political economic theories" » "international politics economic theories", "international political economy theories", "international political economic theory", "international political economics series", "international political economics theory"
"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 economies 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 economic 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 economies series\"))~".
• Removing quotes may allow a broader search: (((( international political economic series ) OR ( international political economic 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 economies series"))*.