Chestnut-flanked white-eye 
(Vành khuyên sườn hung, Zosterops erythropleurus)

The chestnut-flanked white-eye (Zosterops erythropleurus) is a bird in the family Zosteropidae. 

The name Zosterops combines the Ancient Greek words zosteros "belt" or "girdle" and opos "eye".
erythropleurus from Greek: erythro-: red; pleura: rib, side.