Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran ban » tranh ban, tran van, toan ban

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 sang) or (chieu xanh)) - thanh trung cua dong cong tac tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - thanh trung cua dong cong tac tran ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - thanh trung cua dong cong tac tran ban*.