Perhaps you should try some spelling variations:
"process control estadistico datos." » "process control statistical datos.", "process control estadisticas datos.", "process control estadistico factor.", "process control estadistica casos."
"procesos sciences statistical methods." » "procesos ciencias statistical methods.", "procesos sociales statistical methods.", "procesos civiles statistical methods.", "procesos sciences statistics methods.", "procesos sciences 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 sciences statistical methods.") or ("process control estadistico datos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesos sciences statistical methods.") OR ("process control estadistico datos.")).
• Removing quotes may allow a broader search: (( procesos sciences statistical methods. ) or ( process control estadistico datos. )).
• Adding a wildcard symbol may retrieve word variants: (("procesos sciences statistical methods.") or ("process control estadistico datos."))*.