Hi tinycore,
indeed, there are some language specific characters you can't print in the terminal. It's the same for me.
F.i. I can't print the German letters ä,ö,ü,ß. But what do you need them for?
In the terminal you type commands and they have only ASCII conform characters.
If you use a program in the terminal like f.i. the text editor vim and edit a text file, then again all characters are at your diposal.