For example 15104032@student.hcmute.edu.vn
Any help is appreciated.
Following the documentation you can go for Usage Restriction
with the Allowed Emails/Email restrictions
option, using wildcard character to mact multiple email addresses from a same domain.
Allowed Emails/Email restrictions – Email address or addresses that can use a coupon. Verified against customer’s billing email. WooCommerce 3.4+ also allows you to include a wildcard character (*) to match multiple email addresses, for example,
*@gmail.com
would make any gmail address.