Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
xang lai » mang lai, dang loai, trang lai
cac thoi » cac toi, cac hop, cac tro
dac tinh » may tinh, ha tinh, ban tinh
tinh cau » trinh cau, tinh cao, sinh cau
cau tren » cu tren, dau tren, ca tren
lai hoi » dai hoi, lai hoa, lai roi
qua cac » cua cac
thoi ca » tho ca, thoi va, thi ca
y xang » ty xang
ca dac » cac dac, ca dao, ca dan

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 (thuoc sach)) y xang lai hoi. hieu qua cac thoi ca dac tinh cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) y xang lai hoi. hieu qua cac thoi ca dac tinh cau tren.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuoc sach)) y xang lai hoi. hieu qua cac thoi ca dac tinh cau tren*.