Perhaps you should try some spelling variations:
"international africa economic series" » "international african economic series", "international american economic series", "international price economic series", "international asia economic series", "international africa economics series", "international africa economic services", "international africa economy series"
"national poverty economic status" » "national property economic status", "national forestry economic status", "national policy economic status", "national poverty economic sectors", "national poverty socioeconomic status"

Try widening your search to All Fields.

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

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