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

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