Perhaps you should try some spelling variations:
sang lai » sang tai, sang lap, mang lai
van hanh » van thanh, ban hanh, van anh
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai hoa, lai roi
va hanh » va thanh, va danh, ban hanh
tu sai » tu bai, tu san, tu cai
vi cua » vai cua, di cua
cua te » cua tu
ve cac » va cac, vien cac
sai ky » sac ky
ve cam » ve cham, va cam, ve cai

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

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