Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tong cong » trong cong, cong cong, dung cong
trung ha » trung hoc, trung tam, trung cap
dan than » dan chan, ban than, van than
van toan » van tuan, van tan, van thanh
ha tong » han tong, ha dong, ha tang

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

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