Perhaps you should try some spelling variations:
"proceso control devices methodology." » "proceso control service methodology.", "proceso control policies methodology.", "proceso control mexico methodology.", "process control devices methodology.", "proceso contralos devices methodology.", "proces contre devices methodology.", "proceso control civiles methodology."
"proceso contra statistical methods." » "proceso control statistical methods.", "process control statistical methods."

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: (("proceso contra statistical methods.") OR ("proceso control devices methodology."))~.
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• Adding a wildcard symbol may retrieve word variants: (("proceso contra statistical methods.") or ("proceso control devices methodology."))*.