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