Perhaps you should try some spelling variations:
"international american economic series" » "international african economic series", "international africa economic series", "international empirical economic series", "international american economics series", "international american economic services", "international american economy series"
"international poverty economic surveys" » "national poverty economic surveys", "international property economic surveys", "international forestry economic surveys", "international policy economic surveys", "international poverty economic studies", "international poverty economic systems"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international poverty economic surveys") or ("international american economic series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international poverty economic surveys") OR ("international american economic series")).
• Removing quotes may allow a broader search: (( international poverty economic surveys ) or ( international american economic series )).
• Adding a wildcard symbol may retrieve word variants: (("international poverty economic surveys") or ("international american economic series"))*.