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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("serie politicas public.") or ("serie policiaca publica."))) or ("sobre politicas publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie politicas public.") OR ("serie policiaca publica."))) OR ("sobre politicas publicas."))*.
• Removing quotes may allow a broader search: (((( serie politicas public. ) or ( serie policiaca publica. ))) or ( sobre politicas publicas. ))*.