Perhaps you should try some spelling variations:
"process control statistics methods." » "process control estadistico methods.", "process control estadistica methods.", "process century statistics methods.", "process control statistical methods.", "process control statistics methodology.", "proceso control statistics methods.", "procesal control statistics methods."
"procesos control statistical datos." » "procesos control statistical data.", "procesos control estadisticas datos.", "procesos control statistical methods.", "proceso contra statistical datos.", "procesos contables statistical datos.", "proceso contralos statistical datos."

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