Perhaps you should try some spelling variations:
manh thanh » danh thanh, minh thanh, manh thang
duc manh » suc manh, duc anh, duc minh
thanh va » thanh van, hanh va, thanh ha
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
va cua » va chua, via cua, ca cua
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 va cao duc manh thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (xa hoi)). hieu va cao duc manh thanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (xa hoi)). hieu va cao duc manh thanh va cua tre*.