Perhaps you should try some spelling variations:
sach tham » sach nha
hieu ve » hieu va, hieu van
lai cua » dai cua, hai cua, lai chau
van anh » van thanh, van minh
sach tu » sach thu, cach tu, sach ty
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai
tuan » quan, tran, luan

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) or (sach tham)) nang o hoi. hieu ve cam xuc ((van anh) or (tuan anh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach tham)) nang o hoi. hieu ve cam xuc ((van anh) OR (tuan anh)) lai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (sach tham)) nang o hoi. hieu ve cam xuc ((van anh) or (tuan anh)) lai cua tre*.