Perhaps you should try some spelling variations:
policiacas publicas » politicas publicas, politicas publicad, politica publica
policiaca publica » politica publica, politicas publicas, politicas publicad
politica publicas » politicas publicas, politica publica, politica publicaciones
serie policiacas » serie policiaca, serie politicas, serie politica

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: (( serie policiacas publicas. ) OR ( serie ((policiaca publica) OR (politica publicas)). ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( serie policiacas publicas. ) or ( serie ((policiaca publica) OR (politica publicas)). ))~".
• Adding a wildcard symbol may retrieve word variants: (( serie policiacas publicas. ) or ( serie ((policiaca publica) OR (politica publicas)). ))*.