Perhaps you should try some spelling variations:
"procesos science statistical methods." » "procesos sciences statistical methods.", "procesos sciences statistics methods.", "procesos ciencias statistical methods.", "procesos serie statistical methods.", "procesos balance statistical 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."

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 statistics methods.") or ("procesos science statistical methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesos control statistics methods.") OR ("procesos science statistical methods.")).
• Removing quotes may allow a broader search: (( procesos control statistics methods. ) or ( procesos science statistical methods. )).
• Adding a wildcard symbol may retrieve word variants: (("procesos control statistics methods.") or ("procesos science statistical methods."))*.