Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
nang o » nang co, nang ho, nang ro
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: ((nuoc sach) or (toc sach)) ky nang o hoi. hieu ve pham duc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (toc sach)) ky nang o hoi. hieu ve pham duc va hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (toc sach)) ky nang o hoi. hieu ve pham duc va hanh lai cua triet*.