Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
trung cua » truong cua, trung tuan, trung cap
han cong » phan cong, hang cong, hanh cong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
cua han » cua hang, cua nhan, cua phan

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