Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
kho tang » cao tang
cuu tre » cua tre, cau tren, cau treo
ky tang » ky nang, ky dang, ky trong
hai cuu » hai cua, hai chu, hai cuc
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
su sac » su sach, 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 ((ky tang) or (kho tang)) xa hoi. hieu ve ((cao duc) or (pham duc)) van thanh hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) xa hoi. hieu ve ((cao duc) OR (pham duc)) van thanh hai cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. hieu ve ((cao duc) or (pham duc)) van thanh hai cuu tre*.