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."
"proces contre estadistico methods." » "proces contre estadisticas metodos.", "proces control estadistico methods.", "proces control estadistica methods.", "proces muestreo estadistico methods.", "proceso contra estadistico methods.", "proces contreles estadistico methods.", "process control estadistico methods."

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