Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
thanh chau » thanh cha, thanh cham, thanh chu
hiem ngan » kim ngan, viem gan
tuan nong » luan nong, quan nong, tuan duong
nong cong » cong cong, tong cong, nang cong
hoc hiem » hoc hien, hoc thieu, hoc thiet
cong tan » cong tac, cong san, cong thanh
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - thanh trung tuan nong cong tan ((thanh chau) OR (((khan cap) OR (khan ap))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - thanh trung tuan nong cong tan ((thanh chau) or (((khan cap) OR (khan ap))))~".
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - thanh trung tuan nong cong tan ((thanh chau) or (((khan cap) OR (khan ap))))*.