Perhaps you should try some spelling variations:
"problems chile semiotics methodology." » "problems chile statistics methodology.", "problems chile economics methodology.", "problems chile service methodology.", "problem children semiotics methodology."
"proceso control statistical methods." » "process control statistical methods.", "proceso contra statistical methods.", "proceso contralos statistical methods.", "proceso control statistics methods.", "proceso 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: (("problems chile semiotics methodology.") or ("proceso control statistical methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("problems chile semiotics methodology.") OR ("proceso control statistical methods.")).
• Removing quotes may allow a broader search: (( problems chile semiotics methodology. ) or ( proceso control statistical methods. )).
• Adding a wildcard symbol may retrieve word variants: (("problems chile semiotics methodology.") or ("proceso control statistical methods."))*.