Perhaps you should try some spelling variations:
sang lai » sang tai, sang lap, mang lai
hieu so » thieu so
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai hoa, lai roi
hieu su » hieu sau, tieu su, hieu suat
vi cua » vai cua, di cua
te bai » te bao, te tai, te ban
bai ky » ban ky, sai ky, bac 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: te bai ky sang lai hoi. ((hieu su) or (hieu so)) chao ((xu va) OR (su va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky sang lai hoi. ((hieu su) OR (hieu so)) chao ((xu va) OR (su va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te bai ky sang lai hoi. ((hieu su) or (hieu so)) chao ((xu va) OR (su va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: te bai ky sang lai hoi. ((hieu su) or (hieu so)) chao ((xu va) OR (su va)) hanh vi cua te*.