Perhaps you should try some spelling variations:
"buena a matar, federico," » "buena la matar, federico," (Expand Search), "buena o matar, federico," (Expand Search), "buena mal matar, federico," (Expand Search), "buena y matar, federico," (Expand Search), "buena a matter, federico," (Expand Search), "buena a tratar, federico," (Expand Search)