Hi Sherri,

Lunna is today in Belarus.
https://www.jewishgen.org/Communities/community.php?usbgn=-1945652

You can search:
https://www.jewishgen.org/databases/Belarus/

It was common for marriages to not be recorded civilly, and extant records vary greatly by town / region.

You can search by town name and browse through those records. 

When searching by surname it is best to do a phonetic or soundex search as names get spelled in variant ways.

Good luck in your search,

Sherri Bobish