Perhaps you should try some spelling variations:
"serie policiaca publicad." » "serie politica publica.", "serie politica publicas.", "serie politicas publicad."
"sobre politicas publicas." » "sobre politicas publicadas.", "sobre politica publicaas.", "sobre politica publicasas.", "sobre politica publicas.", "serie politicas publicas."
"sobre politicas public." » "sobre politicas publicad.", "sobre politica publica.", "sobre politica publicas.", "sobre politica public.", "serie politicas public."

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: (((("sobre politicas publicas.") or ("serie policiaca publicad."))) or ("sobre politicas public."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sobre politicas publicas.") OR ("serie policiaca publicad."))) OR ("sobre politicas public.")).
• Removing quotes may allow a broader search: (((( sobre politicas publicas. ) or ( serie policiaca publicad. ))) or ( sobre politicas public. )).
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas publicas.") or ("serie policiaca publicad."))) or ("sobre politicas public."))*.