Anarhynchus is a genus of plovers formerly placed in the genus Charadrius.  

1/ Greater sand plover (Choi choi lưng hung, Anarhynchus leschenaultii) 
The specific leschenaultii commemorates the French botanist Jean Baptiste Leschenault de la Tour.

2/ Kentish plover (Choi choi cổ khoang, Anarhynchus alexandrinus) 

3/ Malaysian plover (Choi choi lưng đen, Anarhynchus peronii)

4/ Siberian sand plover (Anarhynchus mongolus) 
The specific mongolus is Latin and refers to Mongolia, which at the time of naming referred to a larger area than the present country.
The species was previously known as  "lesser sand plover".

5/ Oriental plover (Anarhynchus veredus), also known as the oriental dotterel

Charadriidae, Charadrius: Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate; from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine").
The genus name is from Ancient Greek ana meaning "backward", and rhunkhos meaning "bill".