Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
xang lai » mang lai, dang loai, trang lai
cac thoi » cac toi, cac hop, cac tro
dinh cua » dinh cuu, sinh cua, dinh cu
lai hoi » dai hoi, lai hoa, lai roi
qua cac » cua cac
thoi ca » tho ca, thoi va, thi ca
cua tre » cua te, cuu tre, cua triet
y xang » ty xang
ca do » ca dao, cau do, cap do

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (doc sach)) y xang lai hoi. hieu qua cac thoi ca do dinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) y xang lai hoi. hieu qua cac thoi ca do dinh cua tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) y xang lai hoi. hieu qua cac thoi ca do dinh cua tre*.