Perhaps you should try some spelling variations:
en pianoforte » e pianoforte, per pianoforte, del pianoforte
pere teatral » opere teatrali
obra teatral » obras teatrales
celebri de » celebri di
casos en » casos de
e casos » de casos, en casos, y casos
pezzi » pozzi

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 de ((pere teatral) OR (obra teatral)) e casos en pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebri de ((pere teatral) OR (obra teatral)) e casos en pianoforte.*.