Phong Trần Ngọc@tranngocphongViet NamFollow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencetranngocphong has not updated employment details yet.Educationtranngocphong has not updated education details yet.