Grey-backed shrike 
(Bách thanh lưng xám, Lanius tephronotus)

The grey-backed shrike (Lanius tephronotus) is a bird in the family Laniidae inhabiting South-east Asia.

Laniidae, Lanius: derived from the Latin word for "butcher".
tephronota, tephronotum, tephronotus: Greek tephros ash-coloured; -notos-backed (noton back).