Perhaps you should try some spelling variations:
"proceso contralos statistical methods." » "proceso control statistical methods.", "proceso contra statistical methods.", "proces contreles statistical methods.", "process control statistical methods."
"procesos contables estadistico methods." » "procesos control estadistico methods.", "procesos control estadistica methods.", "procesos hoteles estadistica methods.", "procesos contables estadisticas metodos.", "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: (("proceso contralos statistical methods.") or ("procesos contables estadistico methods."))~.
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• Adding a wildcard symbol may retrieve word variants: (("proceso contralos statistical methods.") or ("procesos contables estadistico methods."))*.