Perhaps you should try some spelling variations:
"procesos control statistical methodology." » "procesos control statistics methodology.", "procesos control statistical methods.", "process control statistical methodology.", "procesos contables statistical methodology.", "proceso contralos statistical methodology."
"proceso contra economics methodology." » "proceso coyuntura economica methodology.", "proceso cultural economics methodology.", "proceso cultura economica methodology.", "process control economics methodology."

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