Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh lai » thanh hai, thanh lap, thanh loi
thu sach » tu sach, thuat sach, thuoc sach
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc ban » duc tan, duc van, dua ban
lai cua » dai cua, hai cua, lai chau
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (((so sach) OR (so sanh)))) ky nang o hoi. hieu ve pham duc ban thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (((so sach) OR (so sanh)))) ky nang o hoi. hieu ve pham duc ban thanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (((so sach) OR (so sanh)))) ky nang o hoi. hieu ve pham duc ban thanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (((so sach) OR (so sanh)))) ky nang o hoi. hieu ve pham duc ban thanh lai cua te*.