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

• Performing a fuzzy search may retrieve terms with similar spellings: (("proceso contralos statistical methods.") or ("procesos contables estadistica methods."))~.
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• Adding a wildcard symbol may retrieve word variants: (("proceso contralos statistical methods.") or ("procesos contables estadistica methods."))*.