Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang nong » dang cong, hang nong, tang nong
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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 ((hieu manh) OR (chieu sach)) - thanh tung cua dang nong ((dan toan) OR (ban than)) ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sach)) - thanh tung cua dang nong ((dan toan) or (ban than)) ban*.