Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach
va chat » van chat, va phat, cao chat
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
va cham » va tham
xang xa » lang xa, mang xa, ang xa
vu sach » vu bach, vu khach
vi cua » vai cua, di cua

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) OR (vu sach)) ty xang xa hoi. hieu ((va cham) or (va chat)) duc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty xang xa hoi. hieu ((va cham) OR (va chat)) duc ban thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty xang xa hoi. hieu ((va cham) or (va chat)) duc ban thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty xang xa hoi. hieu ((va cham) or (va chat)) duc ban thanh vi cua tre*.