Perhaps you should try some spelling variations:
"proceso contralos estadistica methods." » "proceso control estadistica methods.", "proceso control estadistico methods.", "proceso hoteles estadistica methods.", "proceso contralos estadisticas metodos.", "proceso contralos estadisticas medicas.", "proceso contra estadistica methods.", "proces contreles estadistica methods.", "procesos contables estadistica methods."
"procesos control statistical methods." » "process control statistical methods.", "proceso contra statistical methods.", "procesos contables statistical methods.", "procesos control statistics methods.", "procesos control estadisticas 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: (("procesos control statistical methods.") OR ("proceso contralos estadistica methods."))~.
• Removing quotes may allow a broader search: (( procesos control statistical methods. ) or ( proceso contralos estadistica methods. ))~.
• Adding a wildcard symbol may retrieve word variants: (("procesos control statistical methods.") or ("proceso contralos estadistica methods."))*.