Perhaps you should try some spelling variations:
per pianoforte » e pianoforte, de pianoforte
pezzi celebre » pezzi celebri
opere teatral » opere teatrali
obra teatral » obras teatrales
celebre y » celebre el, celeste y
canto per » canto para, canto de, canto del

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 celebre y ((opere teatral) OR (obra teatral)) y canto per pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi celebre y ((opere teatral) OR (obra teatral)) y canto per pianoforte.".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebre y ((opere teatral) OR (obra teatral)) y canto per pianoforte.*.