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

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesos control statistics methods.") OR ("procesos penales estadistico methods."))~.
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