Perhaps you should try some spelling variations:
"proceso control estadistico methodology." » "proceso control statistics methodology.", "proceso control statistical methodology.", "proceso contra estadistico methodology.", "proceso contralos estadistico methodology.", "proces contre estadistico methodology."
"process control service methodology." » "process control science methodology.", "process control sciences methodology.", "process control devices methodology."

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

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