All the characters found in the VISCII character set:
A, a, , , , , , , , , Ả(), ả(), Ă(), ă(), Ạ(), ạ(),
Ầ(), ầ(), Ấ(), ấ(), Ẫ(), ẫ(), Ẩ(), ẩ(), Ậ(), ậ(),
Ằ(), ằ(), Ắ(), ắ(), Ẵ(), ẵ(), Ẳ(), ẳ(), Ặ(), ặ()
B, b
C, c
D, d, Đ(), đ()
E, e, , , , , , , Ẽ(), ẽ(), Ẻ(), ẻ(), Ẹ(), ẹ(),
Ề(), ề(), Ế(), ế(), Ễ(), ễ[*2], Ể(), ể(), Ệ(), ệ()
F, f
G, g
H, h
I, i, , , , , Ĩ(), ĩ(), Ỉ(), ỉ(), Ị(), ị()
J, j
K, k
L, l
M, m
N, n
O, o, , , , , , , [*1], , Ỏ(), ỏ(), Ơ(), ơ(), Ọ(), ọ(),
Ồ(), ồ(), Ố(), ố(), Ỗ(), ỗ(), Ổ(), ổ(), Ộ(), ộ(),
Ờ(), ờ(), Ớ(), ớ(), Ỡ(), ỡ(), Ở(), ở(), Ợ(), ợ()
P, p
Q, q
R, r
S, s
T, t
U, u, , , , , Ũ(), ũ(), Ủ(), ủ(), Ư(), ư(), Ụ(), ụ(),
Ừ(), ừ(), Ứ(), ứ(), Ữ(), ữ(), Ử(), ử(), Ự(), ự()
V, v
W, w
X, x
Y, y, Ỳ(), ỳ(), , , Ỹ(), ỹ(), Ỷ(), ỷ(), Ỵ(), ỵ()
Z, z
$

Instructions for getting and ễ characters in VISCII using MS notepad:
*1 - to get : Open notepad and enter "A" and save in UTF-8. Open file as ANSI and look for " A" string. The space in the middle can be cut and paste into notepad (in the ANSI mode) to provide the character.
*2 - to get ễ: Open notepad and enter "A" and save in UTF-8. Open file as ANSI and look for "-A" string. The hyphen in the middle can be cut and paste into notepad (in the ANSI mode) to provide the ễ character.