Perhaps you should try some spelling variations:
thanh vang » thanh van, thanh hang, thanh hoang
ban thanh » ban hanh, ban hang
vang cua » mang cua, hang cua, tang cua
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
van lam » van nam
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
tang ma » mang may, tang van
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))) or (tang ma)) hoi. hieu van lam duc ban thanh vang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((((nang xa) OR (nang x))) OR (tang ma)) hoi. hieu van lam duc ban thanh vang cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((((nang xa) or (nang x))) or (tang ma)) hoi. hieu van lam duc ban thanh vang cua tre*.