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