Perhaps you should try some spelling variations:
san doanh » van doanh, toan doanh, vay doanh
ban doanh » van doanh, ban danh, toan doanh
cam cuu » cham cuu, cap cuu
ky tang » ky nang, ky dang, kho tang
van hoi » van hoc, van hoe, van loi
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
tu ban » thu ban, te ban
ve cam » ve cham, ve cac, va cam
ban ky » van ky, dan ky
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: tu ban ky tang ((van hoi) or (van hoa)). hieu ve cam cuu ((ban doanh) OR (san doanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky tang ((van hoi) OR (van hoa)). hieu ve cam cuu ((ban doanh) OR (san doanh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky tang ((van hoi) or (van hoa)). hieu ve cam cuu ((ban doanh) OR (san doanh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu ban ky tang ((van hoi) or (van hoa)). hieu ve cam cuu ((ban doanh) OR (san doanh)) vi cua te*.