Perhaps you should try some spelling variations:
"international policy economics series" » "international poverty economics series", "national policy economics series", "international aid economics series", "international policy economic series", "international public economics series", "international political economics series", "international policy economic studies"
"international prices economics series" » "international best economics series", "international banks economics series", "international prices economic studies", "international process economic series", "international side economics series", "international crisis economic 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 policy economics series") OR ("international prices economics series"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international policy economics series\") OR (\"international prices economics series\"))".
• Removing quotes may allow a broader search: (( international policy economics series ) OR ( international prices economics series )).
• Adding a wildcard symbol may retrieve word variants: (("international policy economics series") OR ("international prices economics series"))*.