Perhaps you should try some spelling variations:
pozzi celebri » pezzi celebri
de pianoforte » e pianoforte, per pianoforte
central de » centro de, centros de
de agentes » de fuentes
agentes de » agente de, fuentes de, antes de
di obra » de obras, de sobra
de obra » de obras

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 : pozzi celebri ((di obra) OR (de obra)) central de agentes de pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pozzi celebri ((di obra) OR (de obra)) central de agentes de pianoforte.*".