Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cao » van dao, van bao, van hao
cao duc » dao duc, cao suc, giao duc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
chu tri » chua tri, chu thi, chu tai
va chu » va che, va cau, va chi
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((x hoi) or (xa hoi)). hieu van cao duc va hanh va chu tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (xa hoi)). hieu van cao duc va hanh va chu tri.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (xa hoi)). hieu van cao duc va hanh va chu tri*.