Perhaps you should try some spelling variations:
sau chao » sau cho, sau chan, cau cham
hieu sau » hieu su, hieu suat, tieu su
lai roi » loi roi
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai hoa, mai hoi
tu san » thu san, tu can, vu san
vi cua » vai cua, di cua
cua te » cua tu
tu ban » thu ban, te ban
xu va » xu van, tu va, su va

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

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