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