Perhaps you should try some spelling variations:
"proceso contralos statistical methods." » "proceso control statistical methods.", "proceso contra statistical methods.", "proces contreles statistical methods.", "procesos contables statistical methods."
"process control estadistico metodos." » "process control statistical metodos.", "process control estadisticas metodos.", "process control estadistica estudios.", "procesos control estadistico metodos.", "procesal control estadistico metodos."

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