Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "procesos control statistical methodology.", "procesal control statistical methodology."
"proceso control racional methodology." » "proceso control science methodology.", "proceso control operacional methodology.", "proceso control tradicional methodology.", "proceso control poblacional methodology.", "proceso contra racional methodology.", "proceso contralos racional methodology.", "proces contre racional methodology."

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

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