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