Perhaps you should try some spelling variations:
"procesos contables statistical methods." » "procesos control statistical methods.", "procesos sociales statistical methods.", "procesos penales statistical methods."
"proceso control estadisticas metodos." » "proceso control estadistica metodos.", "proceso control estadistico metodos.", "proceso control statistical metodos.", "process control estadisticas metodos.", "proceso contra estadisticas metodos.", "proceso contralos estadisticas metodos."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesos contables statistical methods.") OR ("proceso control estadisticas metodos."))~.
• Removing quotes may allow a broader search: (( procesos contables statistical methods. ) or ( proceso control estadisticas metodos. ))~.
• Adding a wildcard symbol may retrieve word variants: (("procesos contables statistical methods.") or ("proceso control estadisticas metodos."))*.