Perhaps you should try some spelling variations:
"procesos contables statistical methods." » "procesos control statistical methods.", "procesos sociales statistical methods.", "procesos penales statistical methods."
"programming software statistics methods." » "programming state statistics methods.", "programming software statistics methodology."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("programming software statistics methods.") or ("procesos contables statistical methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("programming software statistics methods.") OR ("procesos contables statistical methods."))*.
• Removing quotes may allow a broader search: (( programming software statistics methods. ) or ( procesos contables statistical methods. ))*.