Perhaps you should try some spelling variations:
"procesos apendice estadistico methods." » "procesos aprendizaje estadistico methods.", "procesos apendice estadisticas metodos.", "procesos apendice statistical methods.", "prospectos apendices estadistico methods."
"process control statistics methods." » "process control statistical methods.", "process control estadistico methods.", "process control estadistica methods.", "process control statistics methodology.", "proceso control statistics methods.", "procesal control statistics methods."

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