Perhaps you should try some spelling variations:
"procesos contables statistical methods." » "procesos control statistical methods.", "procesos sociales statistical methods.", "procesos penales statistical methods."
"process control plastica aspectos." » "process control latina aspectos.", "process control politica aspectos.", "process control publica aspectos.", "process control political aspectos.", "process control politico aspectos.", "process control latin aspectos."

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