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

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 economic theories"))) OR ((("international political economies series") OR ("international political economy series"))))~.
• 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 economic theories\"))) or (((\"international political economies series\") OR (\"international political economy series\"))))~".
• Removing quotes may allow a broader search: (((((( international political economic series ) or ( international political economics series ))) or ( international political economic theories ))) or ((( international political economies series ) OR ( international political economy series ))))~.
• Adding a wildcard symbol may retrieve word variants: (((((("international political economic series") or ("international political economics series"))) or ("international political economic theories"))) or ((("international political economies series") OR ("international political economy series"))))*.