Perhaps you should try some spelling variations:
"process control statistics methodology." » "process control semiotics methodology.", "process control linguistics methodology.", "process control estadistico methodology.", "process control estadistica methodology.", "process century statistics methodology."
"process control statistical datos." » "process control statistical data.", "process control estadisticas datos.", "process control statistical methods."

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