Perhaps you should try some spelling variations:
pozzi celebri » pezzi celebri
de documentos » y documentos
de pianoforte » e pianoforte, per pianoforte
central de » centro de, centros de
del perez » del peru, del perro, del pez
de perez » d perez, de pureza, de peron

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 : pozzi celebri ((de perez) OR (del perez)) central de documentos de pianoforte.~".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pozzi celebri ((de perez) OR (del perez)) central de documentos de pianoforte.*.