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