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 contralos linguistics methodology." » "proceso contextos linguisticos methodology.", "proceso contact linguistics methodology.", "proceso contrastive linguistics methodology.", "proceso contra linguistics methodology.", "proces contreles linguistics methodology.", "procesos contables linguistics 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 contralos linguistics methodology."))~.
• Removing quotes may allow a broader search: (( process control estadistico methodology. ) or ( proceso contralos linguistics methodology. ))~.
• Adding a wildcard symbol may retrieve word variants: (("process control estadistico methodology.") or ("proceso contralos linguistics methodology."))*.