Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nang cong » nang song, dang cong, bang cong
dung van » duong van, dung va, dang van
van nang » van quang, van ban, van dong
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh mau » thanh mau, anh mau, hanh ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - sach dung van nang cong dan hanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - sach dung van nang cong dan hanh mau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - sach dung van nang cong dan hanh mau*.