Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tran » thanh trang, thanh toan, thanh tra
cong thanh » dong thanh, cong trinh, cong tan
hieu manh » hieu nganh, dieu hanh, hien hanh
tran tuan » tran xuan, tran quang, tran thanh
tuan hang » tuan hoang, tuan bang, tuan dang
cong hanh » cong khanh, hong hanh, song hanh
trang tan » trang tuan, trong tan, tran tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - thanh tran tuan hang ((cong hanh) OR (cong thanh)) trang tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh tran tuan hang ((cong hanh) OR (cong thanh)) trang tan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - thanh tran tuan hang ((cong hanh) OR (cong thanh)) trang tan".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - thanh tran tuan hang ((cong hanh) OR (cong thanh)) trang tan*.