Perhaps you should try some spelling variations:
utilization » utilizacion, utilizaron, reutilizacion
optimization » optimizacion
optimisation » optimizacion, optimezation, utilisation
atomization » atomizacion, atomisation, automatization
factorization » autorizacion, sectorizacion
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: ((utilization or optimization) or (optimisation or (atomization or factorization))) of same~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((utilization OR optimization) OR (optimisation OR (atomization OR factorization))) of same.
• Adding a wildcard symbol may retrieve word variants: ((utilization or optimization) or (optimisation or (atomization or factorization))) of same*.