Looking for Chetreanu/Chetrariu (Buhusi)

Hello fellow researchers!
I'm researching information about people who's named Chetreanu or Chetrariu and who could be a relative. My great grand-father Moise was borned in Buhusi, near Bacau. Is anybody could help me to get in touch with Jews living there ?
Also, I spotted Chetreanu living in Piatra Neamt and in Mangalia but I haven't their postal address.
Any help would be greatly appreciated.
Francois Chetreanu, Avrille, France