I have been trying to look for my Uncle

My name is Phong . I have been trying to look for my Uncle ( My family has been lost him around 20 years ) . His name is Lu Chi Nguyen ( Nguyễn Ch Lư 60 ages now).He was born in 11/01/1952 and In 1972 He was stationed at Viet Nam Mitilary school , KBC 4721 ( Air Training Center in Nha Trang ) 햖 Class of 1972 : 72/608-816 TTHL KQ / DOAN HSQS & DSCN . After 1975 He lives in Arkansas ֖US . And around 1990 my family has been lost his info . My grandmother name is Nguyen Thi Chi and He had 4 sibling (Thi Lu Tri Li - Tri Ly ֖ Thi Thu ) Im 27 years old and never seen my Uncle once but IҒve a his picture . Last know him to be in 1620 S.Caraway rd , Apt 5A Jonesboro , Arkansas 72401. He may have to changed it but I belive he has still lived in Jonesboro area ARK because I has seen his info on peoplefinders.com ( find relative page ) .But also Is unsure if he still alive or deceasedօ.. Would hope him to be alive . My family really want to get in contact with him but I dont know how ? I lives in Viet Nam , if you know his or possibly he read this . I would love to say Hello and that My family miss you so much . So if someone help or his whereabouts could they . Please let him know that I am still trying to find him. You can email me at giaiphapnhanh@hotmail.com. Or call me at +84948.179.139. Many thanks.