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

Try widening your search to All Fields.

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

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