Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
duc ban » duc tan, duc van, dua ban
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
nang xa » lang xa, nang ma, mang xa

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

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