This is the first time I've uploaded a file, not sure if it's right hope it works. Here's Mamo, Ne Otdam, and I think this is the same Yulia Savicheva song you're looking for, if not then I'm sorry. And unfortunately I don't have the others.
http://rapidshare.com/files/23465514...Otdam.mp3.html
http://rapidshare.com/files/23465572..._mamo.mp3.html
http://rapidshare.com/files/23465785...ck_06.mp3.html