Perhaps you should try some spelling variations:
"proces contreles statistical methods." » "proces control statistical methods.", "proceso contralos statistical methods.", "proces contre statistical methods.", "procesos contables statistical methods."
"proceso control statistics data." » "proceso control statistical data.", "proceso control estadistico data.", "proceso control estadistica data.", "process control statistics data.", "proceso contra statistics data.", "proceso contralos statistics data."

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

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