nguyen ba hoang@NBHoangFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork ExperienceNBHoang has not updated employment details yet.EducationNBHoang has not updated education details yet.LinksNBHoang has not updated links details yet. SkillsNBHoang has not updated skills details yet.