Perhaps you should try some spelling variations:
"international policy economics series" » "international poverty economics series", "international prices economics series", "national policy economics series", "international policy economic series", "international politics economics series", "international politik economics series"
"international side economics series" » "international guide economics series", "international video economics series", "international sale economics series", "international home economics series", "international social economics series"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international policy economics series") or ("international side economics series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international policy economics series") OR ("international side economics series"))*.
• Removing quotes may allow a broader search: (( international policy economics series ) or ( international side economics series ))*.