Here is the meaning of zaria in Russian
http://www.abbyyonline.ru/Translate.aspx?lingvoaction=translate&VTI-GROUP=0&Ln=1&words=%D0%B7%D0%B0%D1%80%D1%8F
I have never heard a female name
Zaria.
In Bulgarian, e.g., there are composed names like Svetozar, Velizar, Luchezar, etc. A shorten diminutive form is also available: Zarko. Their female forms are very rare, however.