You may experienced the GUI problem of Some fields are too narrow
Assuming that Vietnamese is set as a locale and you see the problem.
Please make the following change:
go to path: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes]
Add a new String value with the font giving the problem (I believe it should be Sans Serif)
“MS Sans Serif” = “Microsoft Sans Serif”