Perhaps you should try some spelling variations:
factorization » autorizacion, sectorizacion
optimisation » optimizacion, optimezation, utilisation
optimization » optimizacion
automatization » automatizacion, laautomatizacion, automatizado
utilization » utilizacion, utilizaron, reutilizacion
same » some

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((factorization or ((optimisation OR optimization) or automatization)) or utilization) of same~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((factorization OR ((optimisation OR optimization) OR automatization)) OR utilization) of same.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((factorization or ((optimisation OR optimization) or automatization)) or utilization) of same".
• Adding a wildcard symbol may retrieve word variants: ((factorization or ((optimisation OR optimization) or automatization)) or utilization) of same*.