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