Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
lai cua » dai cua, hai cua, lai chau
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, lang van
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((lang xa) or (dang xay)) hoi. hieu va cam ((xuc va) OR (luc va)) thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((lang xa) OR (dang xay)) hoi. hieu va cam ((xuc va) OR (luc va)) thanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((lang xa) or (dang xay)) hoi. hieu va cam ((xuc va) OR (luc va)) thanh lai cua tre*".