Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
ban doanh » van doanh, san doanh, ban danh
tang van » dang van, hoang van, trong van
su triet » su viet, su tien, ve triet
ky tang » ky nang, ky dang, kho tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cau cua » cau qua, ca cua, cu cua
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac

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

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