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