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

Try widening your search to All Fields.

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

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