Perhaps you should try some spelling variations:
"proces contre estadistico methods." » "proces contre estadisticas metodos.", "proces control estadistico methods.", "proces control estadistica methods.", "proces muestreo estadistico methods.", "proceso contra estadistico methods.", "proces contreles estadistico methods.", "process control estadistico methods."
"procesos control statistical methods." » "process control statistical methods.", "proceso contra statistical methods.", "procesos contables statistical methods.", "procesos control statistics methods.", "procesos control estadisticas methods."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("procesos control statistical methods.") OR ("proces contre estadistico methods."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"procesos control statistical methods.\") OR (\"proces contre estadistico methods.\"))".
• Removing quotes may allow a broader search: (( procesos control statistical methods. ) OR ( proces contre estadistico methods. )).
• Adding a wildcard symbol may retrieve word variants: (("procesos control statistical methods.") OR ("proces contre estadistico methods."))*.