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

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