Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "proceso control statistical methodology.", "procesal control statistical methodology."
"procesos contables estadistica methods." » "procesos control estadistica methods.", "procesos hoteles estadistica methods.", "procesos control estadistico methods.", "procesos contables estadisticas metodos.", "procesos contables statistical methods.", "procesos contables estadisticas medicas.", "procesos sociales estadistica methods.", "procesos penales estadistica methods."

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: (("process control statistical methodology.") OR ("procesos contables estadistica methods."))~.
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( procesos contables estadistica methods. ))~.
• Adding a wildcard symbol may retrieve word variants: (("process control statistical methodology.") or ("procesos contables estadistica methods."))*.