Perhaps you should try some spelling variations:
per pianoforte » e pianoforte, de pianoforte
teatrales en » teatrales tell, naturales en, generales en
casos per » casos de, casos en, casos del
en casos » de casos, y casos, en casa
el open » del open, el orden
en open » en orden, del open
pezzi » pozzi

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

• Performing a fuzzy search may retrieve terms with similar spellings: Biblioteca lirica : pezzi celebri ((el open) OR (en open)) teatrales en casos per pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi celebri ((el open) OR (en open)) teatrales en casos per pianoforte.*".