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