Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "procesos control statistical methodology.", "procesal control statistical methodology."
"proceso control economics methodology." » "proceso cultural economics methodology.", "proceso contextos economicos methodology.", "proceso contra economics methodology.", "proceso contralos economics methodology.", "proces contre economics 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 statistical methodology.") or ("proceso control economics methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methodology.") OR ("proceso control economics methodology.")).
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( proceso control economics methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("process control statistical methodology.") or ("proceso control economics methodology."))*.