Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods."
"proces control estadistica methods." » "proces control estadisticas metodos.", "proces control statistical methods.", "proces control estadisticas medicas.", "proces control estadistico methods.", "proces economia estadistica methods.", "proces contre estadistica methods.", "proces contreles estadistica methods.", "proceso contra estadistica methods."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("proces control estadistica methods.") or ("process control statistical methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("proces control estadistica methods.") OR ("process control statistical methodology.")).
• Removing quotes may allow a broader search: (( proces control estadistica methods. ) or ( process control statistical methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("proces control estadistica methods.") or ("process control statistical methodology."))*.