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 economies series" » "international politics economics series", "international political ideologies series", "international political economics series", "international political economy series", "international political economies verghese"
"international political economic theories" » "international political economic theory", "international political economics series", "international political economics theory"
"international political economy theories" » "international political economy series", "international political economy theory", "international political economy theorizing"

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 economy theories"))))) 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 economy theories\"))))) or (\"international political economies series\"))~".
• Removing quotes may allow a broader search: (((( international politics economic series ) or ((( international political economic theories ) OR ( international political economy theories ))))) 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 economy theories"))))) or ("international political economies series"))*.