Perhaps you should try some spelling variations:
"process control estadistico methodology." » "process control statistics methodology.", "process control statistical methodology.", "procesos control estadistico methodology.", "procesal control estadistico methodology."
"proceso control semiotics methodology." » "proceso control statistics methodology.", "proceso control economics methodology.", "proceso control service methodology.", "proceso contra semiotics methodology.", "proceso contralos semiotics methodology.", "proces contre semiotics 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 estadistico methodology.") OR ("proceso control semiotics methodology."))~.
• Removing quotes may allow a broader search: (( process control estadistico methodology. ) or ( proceso control semiotics methodology. ))~.
• Adding a wildcard symbol may retrieve word variants: (("process control estadistico methodology.") or ("proceso control semiotics methodology."))*.