Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
van dinh » van minh, van dich, va dinh
ket cua » ket qua, det cua, keo cua
cau luc » cau truc, cau phuc
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay
tu ang » tu lang, tu anc, tu anh

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