Dòng Nội dung
1
Uơ hay Ua / Nguyễn Đình Hiền. // Ngôn ngữ và đời sống 2015, Số 6 (312)
2015
43-47 tr.

There are two ways to write uơ and ua in some Vietnamese words such as thuở/ thủa; khươ/ khua ;huơ/hua. The article points out the reasons why they exist and provideg g further analyses of each specific case. To avoid inconsistency in the whole phonetic system, the article suggests to write only as thủa, khua, hua instead of thuở, khuơ, huơ.