Perhaps you should try some spelling variations:
"bueno de matar, federico," » "buena fe matar, federico," (Expand Search), "seno de matar, federico," (Expand Search), "pleno de matar, federico," (Expand Search), "bueno de mataro, federico," (Expand Search), "bueno de mata, federico," (Expand Search), "bueno me matar, federico," (Expand Search)