Perhaps you should try some spelling variations:
"proceso control statistical methodology." » "proceso control statistics methodology.", "proceso control statistical methods.", "process control statistical methodology.", "proceso contra statistical methodology.", "proceso contralos statistical methodology."
"process contextos economicos methodology." » "process contextos economics methodology.", "process contextos economica metodologia.", "process contextos economics technology.", "process conciertos economicos methodology.", "process conflictos economicos methodology.", "process anteojos economicos methodology.", "problemas contextos economicos methodology.", "process control economicos methodology.", "proceso contralos economicos methodology."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("proceso control statistical methodology.") or ("process contextos economicos methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("proceso control statistical methodology.") OR ("process contextos economicos methodology.")).
• Removing quotes may allow a broader search: (( proceso control statistical methodology. ) or ( process contextos economicos methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("proceso control statistical methodology.") or ("process contextos economicos methodology."))*.