Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
nam duoc » nam thuoc, da duoc, dat duoc
cua tre » cua te, cuu tre, cua triet
dao duc » giao duc, tao duoc
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
cao duc » cao suc, giao duc, tao duoc
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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