Perhaps you should try some spelling variations:
"serie policiaca publica." » "serie politica publicas.", "serie politicas publicad.", "serie politico publico."
"sobre politicas publicas." » "sobre politica publicas.", "serie politicas publicas.", "sobre politicas public.", "sobre politicas publico."
"etica politica publica." » "publica politica 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 publica.") or ("etica politica publica."))) or ("sobre politicas publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie policiaca publica.") OR ("etica politica publica."))) OR ("sobre politicas publicas."))*.
• Removing quotes may allow a broader search: (((( serie policiaca publica. ) or ( etica politica publica. ))) or ( sobre politicas publicas. ))*.