Perhaps you should try some spelling variations:
sang lai » sang tai, sang lap, mang lai
hieu sau » hieu su, hieu suat, tieu su
sau chao » sau cho, sau chan, cau cham
cu lang » cua lang, tu lang, xu lang
va danh » va dinh, va dan, dia danh
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, ban hanh
lang ky » dang ky, tang ky, bang ky
lai hoi » dai hoi, lai hoa, lai roi
ky sang » ky nang, ky dang, ky tang
vi cua » di cua

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

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