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