Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
tien manh » tien anh, tieng anh, tran manh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
trong van » trong cac
cong van » cong vang, cong san, song van
chat cau » chat cam, chat cao, chat va

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 ((tien manh) OR (tien thanh)) - canh tranh cua nhung ((cong van) OR (trong van)) chat cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien manh) OR (tien thanh)) - canh tranh cua nhung ((cong van) or (trong van)) chat cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) OR (tien thanh)) - canh tranh cua nhung ((cong van) or (trong van)) chat cau*.