Perhaps you should try some spelling variations:
pezzi cerebro » pezzi celebri
opere teatral » opere teatrali
de pianoforte » e pianoforte, per pianoforte
obra teatral » obras teatrales
cerebro y » cerebral y, cerebro de
e centro » el centro, de centro, en centro

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 cerebro y ((opere teatral) OR (obra teatral)) e centro de pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi cerebro y ((opere teatral) OR (obra teatral)) e centro de pianoforte.*.