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

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

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