Perhaps you should try some spelling variations:
"process control statistical methodology." » "process control statistics methodology.", "process control statistical methods.", "procesos control statistical methodology.", "proceso control statistical methodology.", "procesal control statistical methodology."
"post contacto linguistico methodology." » "post contacto linguistics methodology.", "post contacto linguistica metodologia.", "por contacto linguistico methodology.", "post conflicto linguistico methodology.", "los contactos linguistico methodology."

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 methodology.") or ("post contacto linguistico methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("process control statistical methodology.") OR ("post contacto linguistico methodology.")).
• Removing quotes may allow a broader search: (( process control statistical methodology. ) or ( post contacto linguistico methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("process control statistical methodology.") or ("post contacto linguistico methodology."))*.