Perhaps you should try some spelling variations:
pozzi celebri » pezzi celebri
obra central » obra teatral, la central, asia central
agentes del » agentes de, antes del, agente de
central de » centro de, centros de
agentes y » agentes de, fuentes y, antes y
di obra » de obra, de obras, de sobra

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