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

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