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
hien tinh » khien tinh, thien tinh, bien tinh
tan than » tan thanh, ban than, tam than

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

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