Vietnamese characters not supported?

Question

I've tried to add a custom font to resolve this issue but it hasn't worked. Does anyone else have any experience with this? Vietnamese characters normally work with Times New Roman but when I added this as a custom font in the "theme" area it didn't do anything.

Ben Tiedt · Accepted Answer

I tested the default font with the Vietnamese alphabet (that I retrieved hastily from Wikipedia) and it appeared to render correctly: 
 A, a Ă, ă &Acirc;, &acirc; B, b C, c D, d Đ, đ E, e &Ecirc;, &ecirc; G, g H, h I, i K, k L, l M, m N, n O, o &Ocirc;, &ocirc; Ơ, ơ P, p Q, q R, r S, s T, t U, u Ư, ư V, v X, x Y, y 
 If the custom font degrades this experience, I would suspect the custom font is the issue.