Perhaps you should try some spelling variations:
de pianoforte » e pianoforte, per pianoforte
central de » centro de, centros de
de agentes » de fuentes
agentes de » agente de, fuentes de, antes de
de opere » di opere, de ampere
de aere » de aire, de ampere, de acero
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 opere) OR (de aere)) central de agentes de pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebri ((de opere) OR (de aere)) central de agentes de pianoforte.*.