Perhaps you should try some spelling variations:
chien thang » chien thuong, chien chong, hien trang
thong dang » thong dung, thong mang, thong dan
hoc chien » hoc hien, hoach chien, hoc chuyen
va phuong » va thuong, cac phuong
dang van » hoang van, hang va
va cong » tai cong, cua cong
van dau » van dao, phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chien thang - canh tranh ((va cong) or (va phuong)) thong dang van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chien thang - canh tranh ((va cong) OR (va phuong)) thong dang van dau.
• Adding a wildcard symbol may retrieve word variants: hoc chien thang - canh tranh ((va cong) or (va phuong)) thong dang van dau*.