Perhaps you should try some spelling variations:
"cuadernos o practicas." » "cuadernos de practicas.", "acuadernos a practicas.", "cuadernos en practicas.", "cuadernos _ practicas.", "cuadernos x practicas.", "cuadernos con practicas."
"cuadernos y practicas." » "cuadernos de practicas.", "acuadernos a practicas.", "cuadernos en practicas."
"cuadernos a practicas." » "cuadernos de practicas.", "cuadernos del practicas.", "cuadernos a practical.", "cuadernos _ practicas.", "cuadernos a practicar."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cuadernos o practicas.") OR ("cuadernos y practicas."))) or ("cuadernos a practicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuadernos o practicas.") OR ("cuadernos y practicas."))) OR ("cuadernos a practicas.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cuadernos o practicas.\") OR (\"cuadernos y practicas.\"))) or (\"cuadernos a practicas.\"))".
• Removing quotes may allow a broader search: (((( cuadernos o practicas. ) OR ( cuadernos y practicas. ))) or ( cuadernos a practicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("cuadernos o practicas.") OR ("cuadernos y practicas."))) or ("cuadernos a practicas."))*.