Perhaps you should try some spelling variations:
van dinh » van minh, van dich, xuan dinh
tu sach » thu sach, su sach, te sach
lam cua » nam cua, lam chat
va dinh » va kinh, va tinh, vu dinh
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach ty
dong ha » dong hoa, dong va, dong hoc
va cao » va co, va dao, va bao
ha hoi » hoa hoi, ha noi, xa hoi

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 tu dong ha hoi. hieu ((va cao) or (va cac)) vuc ((van dinh) OR (va dinh)) lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu dong ha hoi. hieu ((va cao) OR (va cac)) vuc ((van dinh) OR (va dinh)) lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu dong ha hoi. hieu ((va cao) or (va cac)) vuc ((van dinh) OR (va dinh)) lam cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach tu dong ha hoi. hieu ((va cao) or (va cac)) vuc ((van dinh) OR (va dinh)) lam cua tre*.