Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
van cam » van nam, van lam, van cau
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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 hoa. hieu van cam ((xuc va) OR (luc va)) hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky dang ma hoa. hieu van cam ((xuc va) OR (luc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang ma hoa. hieu van cam ((xuc va) OR (luc va)) hanh vai cua tre*.