Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
ban danh » ban doanh, ban hanh, ban dan
cuu tre » cau tren, cau treo
cuu ban » cuu van, cua ban, cuu san
cua tre » cua te, cua triet, dua tren
cac cuu » cap cuu, cac cau, cac chu
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ky lang » ky dang, ky tang, tay lang
ve cac » va cac, vien cac
tu ban » thu ban, te ban

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