Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
bat thanh » ban thanh, bac thanh, dat thanh
thanh ve » hanh ve, thanh va, thanh vien
cua tre » cua te, cuu tre, cua triet
duc bat » duoc bat, duc ban, duc bao
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
su viet » so viet
va cao » va cac, va co, va dao
y nang » ky nang, v nang, may nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((y nang) OR (ly nang)) xa hoi. hieu va cao duc bat thanh ve ((cua tre) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y nang) OR (ly nang)) xa hoi. hieu va cao duc bat thanh ve ((cua tre) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((y nang) OR (ly nang)) xa hoi. hieu va cao duc bat thanh ve ((cua tre) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y nang) OR (ly nang)) xa hoi. hieu va cao duc bat thanh ve ((cua tre) or (su viet))*.