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

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 pablo.") OR ("sobre politica publica."))) OR ("serie policiaca publicas."))~.
• Removing quotes may allow a broader search: (((( sobre politicas pablo. ) or ( sobre politica publica. ))) or ( serie policiaca publicas. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas pablo.") or ("sobre politica publica."))) or ("serie policiaca publicas."))*.