Perhaps you should try some spelling variations:
sach bai » sach dao, cac bai
lang van » dang van, tang van, hoang van
ve cham » va cham, ve chat, vu cham
danh vi » hanh vi, dinh vi, danh di
hieu ve » hieu va, hieu van
sach xa » sach dao, sach nha
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach xa) OR (sach bai)) lang van hoi. hieu ve cham ((xuc va) OR (tuc xa)) danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach xa) OR (sach bai)) lang van hoi. hieu ve cham ((xuc va) or (tuc xa)) danh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach xa) OR (sach bai)) lang van hoi. hieu ve cham ((xuc va) or (tuc xa)) danh vi cua tre*.