Perhaps you should try some spelling variations:
"process control estadistica methodology." » "process control statistics methodology.", "process control estadistico methodology.", "process control statistical methodology.", "process economia estadistica methodology.", "procesos control estadistica methodology.", "procesal control estadistica methodology."
"proceso control values methodology." » "proceso control based methodology.", "proceso control policies methodology.", "proceso contra values methodology.", "proceso contralos values methodology.", "proces contre values methodology.", "proceso control andes methodology.", "proceso control cafes 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 estadistica methodology.") or ("proceso control values methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control estadistica methodology.") OR ("proceso control values methodology."))*.
• Removing quotes may allow a broader search: (( process control estadistica methodology. ) or ( proceso control values methodology. ))*.