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