Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
sach tru » sach truc, sach thu, sach tren
doanh de » doanh dao, doanh ket, doanh va
cham duc » pham duc, cham soc, pham duy
cuu tre » cua tre, cau tren, cau treo
duc ban » duc tan, duc van, dua ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
cua su » qua su
x hoi » xa hoi, o hoi, x ho

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: tu ((sach tru) OR (sach tu)) nang x hoi. hieu ve cham duc ban doanh de ((cuu tre) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tru) OR (sach tu)) nang x hoi. hieu ve cham duc ban doanh de ((cuu tre) or (cua su))~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tru) OR (sach tu)) nang x hoi. hieu ve cham duc ban doanh de ((cuu tre) or (cua su))*.