Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "proceso control statistical methodology.", "procesal control statistical methodology."
"procesos contables devices methodology." » "procesos contables service methodology.", "procesos contables policies methodology.", "procesos contables mexico methodology.", "procesos sociales devices methodology.", "procesos penales devices methodology.", "procesos control devices methodology."

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

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