Perhaps you should try some spelling variations:
policiacas publica » politica publica, politicas publicad, politica publicas
politica publicasd » politica publicas, politica publica, politicas publicad
serie policiacas » serie policiaca, serie politicas, serie politica
publicasd » publicd, publicod
publicas » public, publico

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