Perhaps you should try some spelling variations:
"international based economy series" » "international case economy series", "international cases economy series", "international basic economy series", "international based economics series", "international closed economy series", "international mixed economy series"
"international poor economy series" » "international pour economy series", "international power economy series", "international port economy series", "international poor economics series", "international poor economic series", "international our economy series", "international cool economy series"

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