Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
dang vat » dang van, dong vat, dang nhat
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
dang ma » dang mau, dang mam, dang mat
xuc va » duc va, tuc va, luc va
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky ((dang ma) or (dang vat)) hoi. hieu ((ve cam) or (ve cham)) xuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((dang ma) OR (dang vat)) hoi. hieu ((ve cam) OR (ve cham)) xuc va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((dang ma) or (dang vat)) hoi. hieu ((ve cam) or (ve cham)) xuc va hanh vai cua tre*.