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 service methodology." » "procesos contables science methodology.", "procesos contables sciences methodology.", "procesos sociales service methodology.", "procesos penales service 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 ("procesos contables service methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methodology.") OR ("procesos contables service methodology."))*.
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( procesos contables service methodology. ))*.