We really, really, need a tutorial on "How to say 'how' in Vietnamese".
The only instructions we were given on 'how to say 'how'' was "làm sao', in front of the phrase, or 'như thế nào' at the end. Further down the course, we get bombarded with all these 'làm thế nào's, 'việc thế nào's , etc. peppered all throughout sentences--at the end, at the front, and in the middle. This really should be a separate module, taught early on.