Oriental Reed Warbler 
(Chích đầu nhọn phương đông, Acrocephalus orientalis)

The Oriental reed warbler (Acrocephalus orientalis) is a passerine bird of eastern Asia belonging to the reed warbler genus Acrocephalus. 

Acrocephalidae: from the name of the genus Acrocephalus from Ancient Greek akros, "highest", and kephale, "head". 
It is possible that the Naumanns thought akros meant "sharp-pointed".