Perhaps you should try some spelling variations:
"serie policiaca public." » "serie politica publicas.", "serie politico publico."
"series politicas publicas." » "serie politicas publicas.", "series political publicas.", "serie politica publicas.", "series politicas publico."
"sobre politica publica." » "sobre politicas publica."

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

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