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