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