Perhaps you should try some spelling variations:
"proceso contra science methodology." » "proceso contra sciences meteorology.", "proceso contra science anthropology.", "process control science methodology.", "proceso contra pacientes methodology."
"procesos control statistical methods." » "process control statistical methods.", "procesos contables statistical methods.", "proceso contralos statistical methods.", "procesos control statistics methods.", "procesos control estadisticas methods."

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