Perhaps you should try some spelling variations:
obra teatral » obras teatrales
patentes de » agentes de, patentes en, satelites de
fuentes del » fuentes de, fuente de
celebri de » celebri di
teatral de » teatral e, central de, teatro de
de obra » de obras
pezzi » pozzi

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 celebri de obra teatral de ((patentes de) OR (fuentes del)) pianoforte.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi celebri de obra teatral de ((patentes de) OR (fuentes del)) pianoforte.".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebri de obra teatral de ((patentes de) OR (fuentes del)) pianoforte.*.