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."
"progresos tecnicos estadisticas methods." » "progresos tecnicas estadisticas methods.", "progresos tecnicas geoestadisticas methods.", "progresos mexico estadisticas methods.", "progresos tecnicos estadisticas metodos.", "progresos tecnicos estadisticas datos.", "progresos tecnicos estadisticas medicas.", "progreso tecnico estadisticas methods."

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