Perhaps you should try some spelling variations:
"proces contreles statistics methodology." » "proces contreles semiotics methodology.", "proces contreles linguistics methodology.", "proces control statistical methodology.", "proceso contralos statistics methodology.", "proces contre statistics methodology.", "procesos contables statistics methodology."
"process control estadistico methods." » "process control statistical methods.", "process control estadisticas metodos."

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: (("proces contreles statistics methodology.") OR ("process control estadistico methods."))~.
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• Adding a wildcard symbol may retrieve word variants: (("proces contreles statistics methodology.") or ("process control estadistico methods."))*.