This is the ValueSet that contains all the codes in Danh mục Tỉnh/Thành phố Việt Nam (active) — Vietnam Province ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-province-vs) and Danh mục Tỉnh/Thành phố Việt Nam (active) — Vietnam Province ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-province-vs). E.g. what you have to deal with if you get resources containing codes in either of them