Perhaps you should try some spelling variations:
"international political economic surveys" » "international policy economic surveys", "international political economy surveys", "international ecological economics surveys", "international political economic studies", "international political economic systems"
"international poverty economic series" » "national poverty economic series", "international property economic series", "international forestry economic series", "international policy economic series", "international poverty economics series", "international poverty economic services", "international poverty 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 political economic surveys") or ("international poverty economic series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international political economic surveys") OR ("international poverty economic series"))*.
• Removing quotes may allow a broader search: (( international political economic surveys ) or ( international poverty economic series ))*.