Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, tu cach
cac ban » cac dan, cac van, can ban
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
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: ((tu sach) or (te sach)) ky dang ha hoi. hieu ((ve cham) or (va cham)) cac ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang ha hoi. hieu ((ve cham) OR (va cham)) cac ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang ha hoi. hieu ((ve cham) or (va cham)) cac ban thanh vi cua tre*.