In wallet, the second character is a cyrillic a and the fifth a cyrillic ie, encoded in Unicode. This kind of scam is known as a homograph attack. You can find all characters using normal search as long as youre searching for those exact characters.
I can say about the russian alphabet. It has some cyrillic symbols which can be used in a homograph attack.
Lower case (6 identical symbols):
aбвгд
eёжзийклмн
oп
pcтyф
xцчшщъыьэюя
ab
cd
efghijklmn
opqrstuvw
xyz
Upper case (11 identical symbols):
AБ
BГД
EЁЖЗИЙ
КЛ
MHOП
PCTУФ
XЦЧШЩЪЫЬЭЮЯ
ABCD
EFG
HIG
KL
MN
OPQRS
TUVW
XYZ
Note that the cyrillic symbols are encoded as 2 bytes in UTF-8, therefore:
1) wallet = 6 unicode symbols = 6 bytes in UTF-8
2) wallet = 6 unicode symbols = 8 bytes in UTF-8