Perhaps you should try some spelling variations:
"problemas contextos statistics methodology." » "problemas contextos semiotics methodology.", "problemas contextos linguistics methodology.", "problemas contextos museisticos methodology.", "problemas contexto artistico methodology.", "problemas concretos statistics methodology.", "problemas candentes statistics methodology.", "problemas internos statistics methodology."
"proceso control based methodology." » "proceso control values methodology.", "proceso control law methodology.", "proceso control proposed methodology.", "process control based methodology.", "proceso contra based methodology.", "proceso contralos based methodology.", "proceso control basado methodology.", "proceso control case methodology.", "proceso control basico methodology."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("problemas contextos statistics methodology.") or ("proceso control based methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("problemas contextos statistics methodology.") OR ("proceso control based methodology.")).
• Removing quotes may allow a broader search: (( problemas contextos statistics methodology. ) or ( proceso control based methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("problemas contextos statistics methodology.") or ("proceso control based methodology."))*.