Perhaps you should try some spelling variations:
"proceso control statistical methodology." » "proceso control statistics methodology.", "proceso control statistical methods.", "process control statistical methodology.", "proceso contra statistical methodology.", "proceso contralos statistical methodology."
"proceso contratos civiles methodology." » "proceso contratos sciences methodology.", "proceso contratos values methodology.", "proceso contratos criticism methodology.", "proceso contralos civiles methodology.", "proceso contra civiles methodology.", "process control civiles methodology.", "proceso control civiles methodology.", "proceso contratos reales methodology."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("proceso control statistical methodology.") or ("proceso contratos civiles methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("proceso control statistical methodology.") OR ("proceso contratos civiles methodology.")).
• Removing quotes may allow a broader search: (( proceso control statistical methodology. ) or ( proceso contratos civiles methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("proceso control statistical methodology.") or ("proceso contratos civiles methodology."))*.