Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tien thanh » tien thinh, tran thanh, den thanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
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 (tien thanh)) - canh tranh cua nhung ((cong van) OR (song van)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (tien thanh)) - canh tranh cua nhung ((cong van) OR (song van)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (tien thanh)) - canh tranh cua nhung ((cong van) OR (song van)) toan tap*.