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

Try widening your search to All Fields.

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

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