Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
lang van » dang van, tang van, hoang van
cham cuu » cap cuu, chat cua
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky lang van hoi. hieu ve cham cuu ((ban doanh) or (ban hanh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang van hoi. hieu ve cham cuu ((ban doanh) OR (ban hanh)) vi va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang van hoi. hieu ve cham cuu ((ban doanh) or (ban hanh)) vi va triet*.