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

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 (co hoi)). hieu ve pham duc manh 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 (co hoi)). hieu ve pham duc manh thanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (so sach)) ky nang ((o hoi) OR (co hoi)). hieu ve pham duc manh thanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (so sach)) ky nang ((o hoi) OR (co hoi)). hieu ve pham duc manh thanh lai cua te*.