Perhaps you should try some spelling variations:
el pianoforte » del pianoforte, e pianoforte, per pianoforte
generales el » generales del, generales de, general el
generales en » generales del, generales san, generales de
di gases » de gases, de bases, de fases
caso el » caso del, caso en, casos en
pezzi » pozzi
celebri » celebre, celebra, celebro

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 di gases ((generales el) OR (generales en)) caso el pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebri di gases ((generales el) OR (generales en)) caso el pianoforte.*.