Hi @juanvn86,
I think that the charset should be utf8 and utf8_unicode_ci as it is mentionned in the wiki : Language and development rules - Dolibarr ERP CRM Wiki
See this : Dolibarr V19 has been released (Edit : V19.0.3 is availlable)! - #26 by ksar to resolve your issue
try to change and see if your problem is resolved
