Perhaps you should try some spelling variations:
nhanh than » nhanh thanh, nhanh thang, nhanh thai
ban nhanh » ban hanh, ban thanh, ban nhan
than cua » nhan cua, thai cua, ban cua
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
ve cam » ve cac, va cam, ve cai
ca cho » cao cho, cay cho, ca cao

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 ky dang ((ca cho) or (cap cho)). hieu ((ve cam) or (ve cham)) duc ban nhanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ((ca cho) OR (cap cho)). hieu ((ve cam) OR (ve cham)) duc ban nhanh than cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ((ca cho) or (cap cho)). hieu ((ve cam) or (ve cham)) duc ban nhanh than cua tre*.