Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
ban anh » ban hanh, ban banh, ban danh
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (toc sach)) ky nang x hoi. hieu van cham soc ((ban anh) or (ban thanh)) ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (toc sach)) ky nang x hoi. hieu van cham soc ((ban anh) OR (ban thanh)) ve cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (toc sach)) ky nang x hoi. hieu van cham soc ((ban anh) or (ban thanh)) ve cua tre*.