Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh va » thanh van, hanh va, thanh ha
bo sach » hoc sach
co sach » cuon sach, hoc sach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((bo sach) or (co sach))) or (hoc anh)) ky nang xa hoi. lieu va cam duc ban thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((bo sach) OR (co sach))) OR (hoc anh)) ky nang xa hoi. lieu va cam duc ban thanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((((bo sach) or (co sach))) or (hoc anh)) ky nang xa hoi. lieu va cam duc ban thanh va cua tre*.