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