Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau

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