Perhaps you should try some spelling variations:
hieu sau » hieu su, hieu suat, tieu su
sau chao » sau cho, sau chan, cau cham
lai roi » loi roi
lai hoi » dai hoi, lai hoa, mai hoi
vi cua » vai cua, di cua
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua te » cua tu
xu va » xu van, tu va, vu va
su va » su van, tu 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 ky nang ((lai roi) or (lai hoi)). hieu sau chao ((xu va) or (su va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((lai roi) OR (lai hoi)). hieu sau chao ((xu va) OR (su va)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((lai roi) or (lai hoi)). hieu sau chao ((xu va) or (su va)) hanh vi cua te*.