Perhaps you should try some spelling variations:
chien thang » chien thuong, chien chong, hien trang
hoc chien » hoc hien, hoach chien, hoc chuyen
va phuong » va thuong, cac phuong
thong dan » thong van, tuong dan, thong den
va thong » va thuong, he thong, va cong
dan van » dang van, doan van, dao van
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 thong) or (va phuong)) thong dan van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chien thang - canh tranh ((va thong) OR (va phuong)) thong dan van dau.
• Adding a wildcard symbol may retrieve word variants: hoc chien thang - canh tranh ((va thong) or (va phuong)) thong dan van dau*.