Hằng Nguyễn@nguyenanhhang191VietnamFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencenguyenanhhang191 has not updated employment details yet.Educationnguyenanhhang191 has not updated education details yet.