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

• Performing a fuzzy search may retrieve terms with similar spellings: (( Estudio comparatiu dels sistemes penitenciaria europea informe extraordinari, novembre 2007 ) OR ( Estudio comparatiu del sistema penitenciaria europea informe extraordinari, novembre 2007 ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( Estudio comparatiu dels sistemes penitenciaria europea informe extraordinari, novembre 2007 ) OR ( Estudio comparatiu del sistema penitenciaria europea informe extraordinari, novembre 2007 ))".
• Adding a wildcard symbol may retrieve word variants: (( Estudio comparatiu dels sistemes penitenciaria europea informe extraordinari, novembre 2007 ) OR ( Estudio comparatiu del sistema penitenciaria europea informe extraordinari, novembre 2007 ))*.

Perhaps you should try some spelling variations:
sistemes penitenciaria » sistemas penitenciarios (Expand Search), sistema penitenciario (Expand Search), sistema penitenciari (Expand Search)
penitenciaria europea » penitenciaria europeia (Expand Search), penitenciario europeo (Expand Search), penitenciarios europeos (Expand Search)
informe extraordinari » informe extraordinario (Expand Search)
sistema penitenciaria » sistema penitenciario (Expand Search), sistema penitenciari (Expand Search), sistemas penitenciarios (Expand Search)
estudio comparatiu » estudi comparatiu (Expand Search), estudio comparativo (Expand Search), estudio comparado (Expand Search)
comparatiu dels » comparativo del (Expand Search), comparativa del (Expand Search), comparative des (Expand Search)
comparatiu del » comparativo del (Expand Search), comparativa del (Expand Search), comparativos del (Expand Search)
dels sistemes » els sistemes (Expand Search), des systemes (Expand Search), de sistemas (Expand Search)
novembre 2007 » noviembre 2007 (Expand Search), noviembre 2005 (Expand Search), noviembre 2000 (Expand Search)
del sistema » el sistema (Expand Search)