Indochinese Cuckooshrike 
(Phường chèo xám nhỏ, Lalage polioptera)

The Indochinese cuckooshrike (Lalage polioptera) is a species of bird in the family Campephagidae. 

Campephagidae: New Latin, from Campephaga, type genus (from Greek kampē caterpillar + New Latin -phaga) + -idae; 'Phago' is a term used as a prefix in Latin meaning 'Eating' or 'swallowing'. Phago ultimately comes from the Greek phageîn, which means “to eat, devour.”
The genus name is from Ancient Greek lagages, an unidentified bird mentioned by the Greek lexicographer Hesychius of Alexandria.
polioptera / poliopterus: Greek polios pale, grey; -pteros -winged (pteron wing, feather).