Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "procesos control statistical methodology.", "proceso control statistical methodology.", "procesal control statistical methodology."
"propio contexto critico methodology." » "propio contexto criticism methodology.", "propio contexto mexico methodology.", "propio contexto semiotics methodology.", "propio contexto politico methodology.", "propio contexto juridico methodology.", "propio contexto mediatico 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 ("propio contexto critico methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methodology.") OR ("propio contexto critico methodology.")).
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( propio contexto critico methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("process control statistical methodology.") or ("propio contexto critico methodology."))*.