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