Perhaps you should try some spelling variations:
"proceso contralos statistical methods." » "proceso control statistical methods.", "proceso contra statistical methods.", "proces contreles statistical methods.", "procesos contables statistical methods."
"procesal control estadisticas datos." » "procesal control estadistica datos.", "procesal control estadistico datos.", "procesal control statistical datos.", "procesal control estadistica casos.", "procesal control estadisticas metodos.", "procesal control estadisticas de.", "process control estadisticas datos.", "social control estadisticas datos.", "proceso contra estadisticas datos."

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

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