Perhaps you should try some spelling variations:
"proceso contra science ethnology." » "proceso contra science methodology.", "proceso contra science sociology.", "proceso contra science biotechnology.", "process control science ethnology.", "proceso contra pacientes ethnology."
"procesal control statistical methods." » "process control statistical methods.", "social control statistical methods.", "proces contre statistical methods.", "procesal control statistics methods.", "procesal 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: (("procesal control statistical methods.") or ("proceso contra science ethnology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesal control statistical methods.") OR ("proceso contra science ethnology.")).
• Removing quotes may allow a broader search: (( procesal control statistical methods. ) or ( proceso contra science ethnology. )).
• Adding a wildcard symbol may retrieve word variants: (("procesal control statistical methods.") or ("proceso contra science ethnology."))*.