Perhaps you should try some spelling variations:
"proceso control estadistico methodology." » "proceso control statistics methodology.", "process control estadistico methodology.", "proceso contra estadistico methodology.", "proceso contralos estadistico methodology."
"proceso control statistical methods." » "process control statistical methods.", "proceso contra statistical methods.", "proceso contralos statistical methods.", "proceso control statistics methods.", "proceso control estadisticas methods."

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 estadistico methodology.") OR ("proceso control statistical methods."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"proceso control estadistico methodology.\") OR (\"proceso control statistical methods.\"))".
• Removing quotes may allow a broader search: (( proceso control estadistico methodology. ) OR ( proceso control statistical methods. )).
• Adding a wildcard symbol may retrieve word variants: (("proceso control estadistico methodology.") OR ("proceso control statistical methods."))*.