Duy Khương Nguyễn@h20020199Follow BadgesProblem SolvingJava Certificationsh20020199 has not earned any certificates yet. Work Experienceh20020199 has not updated employment details yet.EducationVietnam National University HanoiLinksGithubhttps://github.com/DuyKhuongNg55 Skillsh20020199 has not updated skills details yet.