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

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("proceso contra statistical methods.") OR ("proceso contralos estadisticas methods."))~.
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