Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang hang » nang hang, cang thang, hung thang
thanh cau » thanh chau, thanh mau, nhanh cau
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
va dung » van dung, va duong, vat dung

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)) - hang hang va dung ((cong van) OR (song van)) thanh cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sach)) - hang hang va dung ((cong van) or (song van)) thanh cau*.