I know that when we are reporting a question in our sentence in reported speech, the question mark shall be removed, like this :
Question asked from me : Did you know that girl?
Reported : He asked me If I had known the girl?
So far is everything clear, but what about when my purpose is to ask a question with a wh-clause as a dependent clause ?
like this : Do you know where ....?
Do you know where I can get a handmade knife ?
If the above question sounds to be right, why doesn't the one below?
Do you know where can I get a handmade knife?
To be more exact I want to find a complete explanation and am looking for the grammatical term referred to in my question.