Perhaps you should try some spelling variations:
"problemas contexto linguistico methodology." » "problemas contexto linguistics methodology.", "problemas contexto linguistica metodologia.", "problemas contextos linguisticos methodology.", "problemas contacto linguistico methodology.", "problemas conflicto linguistico methodology.", "problemas contextos linguistico methodology.", "problemas concretos linguistico methodology."
"process control sciences methodology." » "process control science methodology.", "process control sciences meteorology.", "process control science ethnology.", "process control civiles methodology.", "process control nociones methodology."

You may be able to get more results by adjusting your search query.

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