Perhaps you should try some spelling variations:
"serie politica publicas." » "serie politica publica.", "serie politica publicaciones.", "serie politicas publicas.", "serie policiaca publicas.", "sobre politica publicas."
"sobre politicas publicas." » "sobre politica publicas.", "serie politicas publicas."
"serie politica pablo." » "serie politicas pablo.", "serie policiaca pablo.", "sobre politica pablo.", "serie politica para.", "serie colica pablo.", "serie politica al."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sobre politicas publicas.") OR ("serie politica publicas."))) OR ("serie politica pablo."))~.
• Removing quotes may allow a broader search: (((( sobre politicas publicas. ) or ( serie politica publicas. ))) or ( serie politica pablo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas publicas.") or ("serie politica publicas."))) or ("serie politica pablo."))*.