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
lai roi » lai hoi, loi roi
san ky » sang ky, dan ky, ban ky
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
su va » su van

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) OR (van ky)) sang lai roi. hieu sau chao ((su va) or (tu va)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (van ky)) sang lai roi. hieu sau chao ((su va) OR (tu va)) hanh vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (van ky)) sang lai roi. hieu sau chao ((su va) or (tu va)) hanh vi cua tu*".