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