Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
anh doanh » hanh doanh, anh danh, doanh doanh
nhan han » nhan chan, nhan dan, nhan van
han cong » phan cong, hang cong, hanh cong
cong san » cong tac
san ban » sang ban, van ban, can ban
ban cau » bang cau, ban can, van cau

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 (chieu sang)) - anh doanh nhan han cong san ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - anh doanh nhan han cong san ban cau*.