Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh lai » thanh hai, thanh lap, thanh loi
van thanh » ban thanh, van tuan
lai cua » dai cua, hai cua, lai chau
so sach » so sanh, bo sach, co sach
duc van » duc va, duc tan, duc manh
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
cua te » cua tu
o hoi » co hoi, o hoc, o hoa
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) or (so sach)) ky nang ((o hoi) or (o hai)). hieu ve pham duc van thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (so sach)) ky nang ((o hoi) OR (o hai)). hieu ve pham duc van thanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (so sach)) ky nang ((o hoi) or (o hai)). hieu ve pham duc van thanh lai cua te*.