Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
kho tang » cao tang
su sach » so sach, vu sach
cam duc » cam xuc, pham duc, nam duoc
hai cua » thai cua, dai cua, hoi cua
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, ky trong

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 tang) or (kho tang)) xa hoi. hieu va ((cam duc) or (cao duc)) ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky tang) OR (kho tang)) xa hoi. hieu va ((cam duc) OR (cao duc)) ban thanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky tang) or (kho tang)) xa hoi. hieu va ((cam duc) or (cao duc)) ban thanh hai cua tre*.