Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh trung » thanh trung, hanh trang, manh trung
thanh chau » thanh cha, thanh chu, thanh hai
thanh cham » thanh pham, thanh cha, hanh cham
trung cua » truong cua, trung tuan, trung cap
cong cong » cong dong, trong cong, dung cong
cong tac » cong ty

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)) - hanh trung cua cong cong tac ((thanh chau) OR (thanh cham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - hanh trung cua cong cong tac ((thanh chau) OR (thanh cham)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chieu xanh)) - hanh trung cua cong cong tac ((thanh chau) OR (thanh cham))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - hanh trung cua cong cong tac ((thanh chau) OR (thanh cham))*.