Perhaps you should try some spelling variations:
"international political economy theory" » "international policy economy theory", "international political economic theory"
"international best economies series" » "international bank economies series", "international business economies series", "international best economies emdes", "international best economies versus", "international best economies were", "international host economies series", "international east economies series", "international mena economies series"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("international political economy theory") OR ("international best economies series"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international political economy theory\") OR (\"international best economies series\"))*".
• Removing quotes may allow a broader search: (( international political economy theory ) OR ( international best economies series ))*.