Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
tham xuc » tham nuoc, tham thuc, pham duc
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
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 (thuoc sach)) ky lang xa hoi. hieu va tham xuc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thuoc sach)) ky lang xa hoi. hieu va tham xuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thuoc sach)) ky lang xa hoi. hieu va tham xuc va hanh vi cua tre*.