Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
duc ban » duc tan, duc van, dua ban
cao duc » dao duc, cao suc, giao duc
van cao » van dao, van bao, van hao
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang
vu sach » vu bach, vu khach
su sach » so sach
su sac » su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) or (((su sach) or (vu sach)))) ky mang may hoi. hieu van cao duc ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (((su sach) OR (vu sach)))) ky mang may hoi. hieu van cao duc ban thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (((su sach) or (vu sach)))) ky mang may hoi. hieu van cao duc ban thanh hai cua tre*.