Perhaps you should try some spelling variations:
thanh tung » thanh cong
thieu xanh » chieu xanh, hieu manh, thien danh
tung quang » tuong quang, dung quang, hung quang
thanh toan » thanh hoa, thanh san, tinh toan
thien anh » thien danh, tien anh, thien thanh
khai dong » thai dong, khoi dong, thai duong
khi dong » khoi dong, thi dong, khi cong
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - thanh tung quang ((khai dong) OR (khi dong)) thanh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - thanh tung quang ((khai dong) OR (khi dong)) thanh toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - thanh tung quang ((khai dong) OR (khi dong)) thanh toan tap*.