Perhaps you should try some spelling variations:
"cuaderno siete practicas." » "cuaderno liebre practicas.", "cuaderno muerte practicas.", "cuaderno siete partidas.", "cuaderno sexto practicas.", "cuaderno abierto practicas.", "cuaderno docente practicas."
"cuaderno paez practicas." » "cuaderno para practicas.", "cuaderno diez practicas.", "cuaderno bases practicas.", "cuadernos para practicas.", "cuaderno del practicas."
"cuaderno dia practicas." » "cuaderno diez practicas.", "cuaderno de practicas.", "cuaderno ii practicas.", "cuaderno del practicas.", "cuaderno la practicas."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("cuaderno siete practicas.") or ("cuaderno dia practicas."))) or ("cuaderno paez practicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuaderno siete practicas.") OR ("cuaderno dia practicas."))) OR ("cuaderno paez practicas.")).
• Removing quotes may allow a broader search: (((( cuaderno siete practicas. ) or ( cuaderno dia practicas. ))) or ( cuaderno paez practicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("cuaderno siete practicas.") or ("cuaderno dia practicas."))) or ("cuaderno paez practicas."))*.