Perhaps you should try some spelling variations:
del pianoforte » de pianoforte, der pianoforte, e pianoforte
opera teatral » opere teatrali, obra teatral
cerebro y » cerebral y, cerebro de
teatral y » teatral e, teatral de, teatro y
caso del » caso de
y caso » y casos, y ocaso, y craso
pezzi » pozzi
celebri » celebre, celebra, celebro

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi ((celebri di) OR (cerebro y)) opera teatral y caso del pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi ((celebri di) OR (cerebro y)) opera teatral y caso del pianoforte.*.