Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sang lai » sang tai, sang lap, mang lai
lai hoi » dai hoi, lai hoa, lai roi
hieu va » hieu qua
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
y sang » _ sang, duy sang
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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 y sang lai hoi. ((hieu va) OR (lieu va)) cac ((xuc van) or (duc van)) hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y sang lai hoi. ((hieu va) OR (lieu va)) cac ((xuc van) OR (duc van)) hanh di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y sang lai hoi. ((hieu va) OR (lieu va)) cac ((xuc van) or (duc van)) hanh di cua tu*".