Perhaps you should try some spelling variations:
opere teatrales » opere teatrali
de pianoforte » e pianoforte, per pianoforte
teatrales en » teatrales tell, naturales en, generales en
cerebro y » cerebral y
en casos » de casos, y casos, en casa
casos de » caso de, caso del

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 de) OR (cerebro y)) opere teatrales en casos de pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi ((cerebro de) OR (cerebro y)) opere teatrales en casos de pianoforte.*.