Perhaps you should try some spelling variations:
"international political autonomy series" » "international policy autonomy series", "international political economy series", "international political authority series", "international political astronomy series", "international political autonomy states", "international political autonomy survey"
"international ports economy series" » "international airports economy series", "international poverty economy series", "international efforts economy series", "international ports economics series", "international porn economy series", "international sports economic series", "international export economy 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 ports economy series") or ("international political autonomy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international ports economy series") OR ("international political autonomy series")).
• Removing quotes may allow a broader search: (( international ports economy series ) or ( international political autonomy series )).
• Adding a wildcard symbol may retrieve word variants: (("international ports economy series") or ("international political autonomy series"))*.