Perhaps you should try some spelling variations:
sierra central » tierra central
del pianoforte » de pianoforte, der pianoforte, e pianoforte
central en » centrada en, centrado en, central de
de sierra » de tierra, de tierras, de guerra
caso del » caso de
en caso » en casos, el caso, un caso

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 OR celebra) de sierra central en caso del pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pozzi (celebri OR celebra) de sierra central en caso del pianoforte.".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pozzi (celebri OR celebra) de sierra central en caso del pianoforte.*.