Perhaps you should try some spelling variations:
"proces contreles linguistics methodology." » "proces contextos linguisticos methodology.", "proces contact linguistics methodology.", "proces contexto linguistico methodology.", "proceso contralos linguistics methodology.", "proces contre linguistics methodology.", "procesos contables linguistics 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 contreles linguistics methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methods.") OR ("proces contreles linguistics methodology.")).
• Removing quotes may allow a broader search: (( process control statistical methods. ) or ( proces contreles linguistics methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("process control statistical methods.") or ("proces contreles linguistics methodology."))*.