Perhaps you should try some spelling variations:
"international american economic series" » "international empirical economic series", "international prices economic series", "international price economic series", "international africa economic series", "international american economic services", "international american economic theories", "international american economic surveys"
"international poverty economic series" » "national poverty economic series", "international best economic series", "international policy economic series", "international energy economic series", "international poverty economic services", "international poverty economic theories", "international poverty economic surveys"

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 series") or ("international american economic series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international poverty economic series") OR ("international american economic series"))*.
• Removing quotes may allow a broader search: (( international poverty economic series ) or ( international american economic series ))*.