Perhaps you should try some spelling variations:
"international poverty economy series" » "national poverty economy series", "international best economy series", "international poverty economies series"
"international poverty economic surveys" » "national poverty economic surveys", "international best economic surveys", "international policy economic surveys", "international energy economic surveys", "international poverty economic survey"

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