Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
hieu vat » nhieu vat, hieu va, hieu van
va thanh » gia thanh, ban thanh, le thanh
lam chat » luan chat, cao chat, ly chat
tu sach » thu sach, su sach, te sach
vat hau » van hau, hat chau, vat chat
hau duc » huu duc, ha duc, pham duc
va tinh » may tinh
y nang » ky nang, ly nang, v nang
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: tu sach y nang o hoi. hieu vat hau duc ((va thanh) or (va tinh)) lam chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang o hoi. hieu vat hau duc ((va thanh) OR (va tinh)) lam chat triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang o hoi. hieu vat hau duc ((va thanh) or (va tinh)) lam chat triet*.