Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
lang van » dang van, tang van, hoang van
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cam cuu » cham cuu
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky lang van hoi. hieu ve ((cam cuu) or (cap cuu)) ban doanh ((vi cua) OR (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang van hoi. hieu ve ((cam cuu) OR (cap cuu)) ban doanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky lang van hoi. hieu ve ((cam cuu) or (cap cuu)) ban doanh ((vi cua) OR (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky lang van hoi. hieu ve ((cam cuu) or (cap cuu)) ban doanh ((vi cua) OR (di cua)) tre*.