Hello: Xin chao (Xin chào)
Goodbye: Chao tam biet (Chào tạm biệt)
Note: Those in brackets are in normal Vietnamese writing,...
1./ 'Viết chữ không dấu'.Hello, 1/what do you call the writing without tones and 2/do you use it in common writing, messages mainly and my most important question is 3/ how understandable is the writing without tones, are there not many ambiguous words???? Thanks.