Jungle nightjar 
(Cú muỗi Ấn Độ, Cú muỗi Ấn Độ, Caprimulgus indicus)

The jungle nightjar (Caprimulgus indicus) is a species of nightjar found in the Indian Subcontinent.
 
Caprimulgus is derived from the Latin capra, "nanny goat", and mulgere, "to milk".
indicus in Latin means from India.

Bird Species in Vietnam