Perhaps you should try some spelling variations:
para pianoforte » per pianoforte, der pianoforte
pezzi celebra » pezzi celebri
federal para » general para
federal las » general las
celebra di » celebri di
canto para » cantos para, cantico para, cuento para
di obra » de obra, de obras, de sobra

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 celebra di obra ((federal para) OR (federal las)) canto para pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi celebra di obra ((federal para) OR (federal las)) canto para pianoforte.*".