Perhaps you should try some spelling variations:
"acuadernos i tecnologia derecho ;" » "acuadernos i tecnologicas derecho ;", "acuadernos i teologia derecho ;", "acuadernos i biotecnologia derecho ;", "acuadernos a tecnologia derecho ;", "cuadernos a tecnologia derecho ;", "cuadernos o tecnologia derecho ;", "acuadernos y tecnologia derecho ;", "acuadernos la tecnologia derecho ;", "acuadernos 664 tecnologia derecho ;"
"cuadernos de tecnologia deusto ;" » "cuadernos de teologia deusto ;", "cuadernos de tecnologia desde ;", "cuadernos de tecnologia gestion ;", "cuadernos y tecnologia deusto ;", "cuadernos la tecnologia deusto ;", "cuadernos 664 tecnologia deusto ;"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("cuadernos de tecnologia deusto ;") or ("acuadernos i tecnologia derecho ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cuadernos de tecnologia deusto ;") OR ("acuadernos i tecnologia derecho ;")).
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• Adding a wildcard symbol may retrieve word variants: (("cuadernos de tecnologia deusto ;") or ("acuadernos i tecnologia derecho ;"))*.