Hi there, thank you for your support, I really appreciate. I followed the instructions but it doesn’t work. Sorry, I am an amateur in this. Because all my customers are Vietnamese, and so I want the language appeared on the website is Vietnamese. Thank you for your time.
Do you want just to translate your site to Vietnamese or you want to create a multilanguage site?
Did you create the translation for our theme? Did you choose your language for your WP in Settings > General > Site language?