Perhaps you should try some spelling variations:
thien van » thi van
doc sach » hoc sach, nuoc sach, dac sac
toc sach » hoc sach, thuoc sach, nuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
cham duc » pham duc, cham soc, pham duy
van cham » van chat, van tham, va cham
lai cua » dai cua, hai cua, lai chau
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
cua te » cua tu

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: ((doc sach) OR (toc sach)) y ((lang xa) OR (nang x)) hoi. thien van cham duc va hanh lai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) OR (toc sach)) y ((lang xa) or (nang x)) hoi. thien van cham duc va hanh lai cua te~".
• Adding a wildcard symbol may retrieve word variants: ((doc sach) OR (toc sach)) y ((lang xa) or (nang x)) hoi. thien van cham duc va hanh lai cua te*.