Perhaps you should try some spelling variations:
van dinh » van minh, van dich, va dinh
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
xang xa » lang xa, mang xa, dang xay
hieu ve » hieu va, hieu van
ket cua » ket qua, det cua, keo cua
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay

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 tu ((xang xa) or (ang xa)) hoi. hieu ve ((cau truc) or (cam xuc)) van dinh ket cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((xang xa) OR (ang xa)) hoi. hieu ve ((cau truc) OR (cam xuc)) van dinh ket cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu ((xang xa) or (ang xa)) hoi. hieu ve ((cau truc) or (cam xuc)) van dinh ket cua tre*.