Perhaps you should try some spelling variations:
"international best economic series" » "international bank economic series", "international business economic series", "international best economics series", "international best economic services", "international best economic theories", "international west economic series", "international leste economic series", "international east economic series"
"international prices economy series" » "international prices economic series", "international driven economy series", "international rich economy series", "international prices economics 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 best economic series") or ("international prices economy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international best economic series") OR ("international prices economy series")).
• Removing quotes may allow a broader search: (( international best economic series ) or ( international prices economy series )).
• Adding a wildcard symbol may retrieve word variants: (("international best economic series") or ("international prices economy series"))*.