Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
hieu van » hieu va, thien van, lieu va
cac thuc » cach thuc, cac thu, can thuc
thuc ban » thuoc ban, thuc dan, thu ban
doanh vi » doanh va, doan vi, doanh vien
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
van cac » van hac, van cau, van bac
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((lang xa) or (nang ma)) hoi. hieu van cac thuc ban doanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((lang xa) OR (nang ma)) hoi. hieu van cac thuc ban doanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach y ((lang xa) or (nang ma)) hoi. hieu van cac thuc ban doanh vi cua te*.