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 estadistico methods." » "procesos control estadistico methods.", "procesos control estadistica methods.", "procesos hoteles estadistica methods.", "procesos contables estadisticas metodos.", "procesos contables statistical methods.", "procesos sociales estadistico methods.", "procesos penales estadistico methods."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("process control statistical methodology.") or ("procesos contables estadistico methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methodology.") OR ("procesos contables estadistico methods."))*.
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( procesos contables estadistico methods. ))*.