Perhaps you should try some spelling variations:
"international political economic surveys" » "international policy economic surveys", "international political economy surveys", "international ecological economics surveys"
"international banks economic theories" » "international bank economic theories", "international best economic theories", "international business economic theories", "international banks economic theory", "international bank's economic theories", "international wages economic theories"

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 economic surveys") or ("international banks economic theories"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic surveys") OR ("international banks economic theories")).
• Removing quotes may allow a broader search: (( international political economic surveys ) or ( international banks economic theories )).
• Adding a wildcard symbol may retrieve word variants: (("international political economic surveys") or ("international banks economic theories"))*.