Perhaps you should try some spelling variations:
van dinh » van minh, van dich, va dinh
te sach » toc sach
dinh le » dinh ve, dinh ly, dinh ket
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((mang xa) or (lang xa)) hoi. hieu ve ((cau truc) or (cam xuc)) van dinh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((mang xa) OR (lang xa)) hoi. hieu ve ((cau truc) OR (cam xuc)) van dinh le cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((mang xa) or (lang xa)) hoi. hieu ve ((cau truc) or (cam xuc)) van dinh le cua tre*.