Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
vi cuu » vi luu, vinh cuu
x hoi » o hoi, x ho, 5 hoi

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang ((x hoi) OR (xa hoi)). hieu ve cam duc van hanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky nang ((x hoi) OR (xa hoi)). hieu ve cam duc van hanh vi cuu tre*.