Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
tuan khong » toan khong, tuan phong, thuan phong
khong cong » thong cong, khong cang, chong cong
hiem ngan » kim ngan, viem gan
hoc hiem » hoc hien, hoc thieu, hoc thiet
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hiem ngan - thanh trung tuan khong cong dan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - thanh trung tuan khong cong dan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - thanh trung tuan khong cong dan ((than cau) or (phan cau))*.