Perhaps you should try some spelling variations:
nang lai » nang tai, mang lai, nang cai
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
lai roi » lai hoi, loi roi
soc van » hoc van, oc van, sac van
su tien » su kien, su hien, tu tieng

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang lai roi. hieu van cham soc van ((hanh kem) or (hanh vi)) su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang lai roi. hieu van cham soc van ((hanh kem) OR (hanh vi)) su tien.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang lai roi. hieu van cham soc van ((hanh kem) or (hanh vi)) su tien*.