Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods."
"proceso control operacional methodology." » "proceso centro operacional methodology.", "proceso control racional methodology.", "proceso control internacional methodology.", "proceso contra operacional methodology.", "proceso contralos operacional methodology.", "proces contre operacional methodology."

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