Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
danh doi » danh di, thanh doi, dung doi
lang van » dang van, tang van, hoang van
te sach » toc sach
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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 thi ((lang xa) OR (lang van)) hoi. hieu ((ve cam) OR (ve cac)) duc va danh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi ((lang xa) OR (lang van)) hoi. hieu ((ve cam) or (ve cac)) duc va danh doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach thi ((lang xa) OR (lang van)) hoi. hieu ((ve cam) or (ve cac)) duc va danh doi cua tre*.