Perhaps you should try some spelling variations:
sau chao » sau cho, sau chan, cau cham
hieu sau » hieu su, hieu suat, tieu su
tu sang » thu sang, tu lang, tu quang
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
lai hoi » dai hoi, lai hoa, lai roi
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
tu san » thu san, tu ban, tu can
vi cua » vai cua, di cua
cua te » cua tu
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 sang) or (tu san)) ((ky sang) OR (ky dang)) lai hoi. hieu sau chao xu va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sang) OR (tu san)) ((ky sang) OR (ky dang)) lai hoi. hieu sau chao xu va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sang) or (tu san)) ((ky sang) OR (ky dang)) lai hoi. hieu sau chao xu va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sang) or (tu san)) ((ky sang) OR (ky dang)) lai hoi. hieu sau chao xu va danh vi cua te*.