Perhaps you should try some spelling variations:
bases generales » rasgos generales, bases neurales, leyes generales
pezzi celebre » pezzi celebri
de pianoforte » per pianoforte
generales el » generales del, generales en, generales de
celebre y » celebre el, celeste y
y bases » y clases

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 celebre y bases generales el cuerpo ((de pianoforte) OR (e pianoforte)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "Biblioteca lirica : pezzi celebre y bases generales el cuerpo ((de pianoforte) OR (e pianoforte)).".
• Adding a wildcard symbol may retrieve word variants: Biblioteca lirica : pezzi celebre y bases generales el cuerpo ((de pianoforte) OR (e pianoforte)).*.