Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh chua » doanh cua, doanh chu, doanh chung
chua bang » chu bang, chua nang, chua xang
bang cong » dang cong, bang song, hang cong
cong quan » cuong quan, cong quang, tong quan
luan cau » quan cau, lua cau, luat cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (chieu sach)) - canh doanh chua bang cong quan luan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sach)) - canh doanh chua bang cong quan luan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sach)) - canh doanh chua bang cong quan luan cau*.