Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
lai roi » lai hoi
loi roi » loi noi, voi roi, loi gioi
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang ((lai roi) OR (loi roi)). hieu ve cam xuc ((va dinh) or (va dau)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ((lai roi) OR (loi roi)). hieu ve cam xuc ((va dinh) OR (va dau)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang ((lai roi) OR (loi roi)). hieu ve cam xuc ((va dinh) or (va dau)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang ((lai roi) OR (loi roi)). hieu ve cam xuc ((va dinh) or (va dau)) vai cua tre*.