Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
va cham » va chat
va tham » van tham, va thanh, va thuat
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang x hoi. hieu ((va cham) or (va tham)) xuc va hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang x hoi. hieu ((va cham) OR (va tham)) xuc va hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang x hoi. hieu ((va cham) or (va tham)) xuc va hanh vi ((cua tre) or (cua te))*.