Perhaps you should try some spelling variations:
chet duoc » che duoc, cho duoc, che quoc
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
duoc ban » duc ban, quoc ban, buoc ban
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
te sach » toc sach
hieu ve » hieu va, hieu van
ve chet » ve chat, ve che, se chet
van va » van vat, van van, ban va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (te sach)) ky nang x hoi. hieu ve chet duoc ban thanh van va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (te sach)) ky nang x hoi. hieu ve chet duoc ban thanh van va triet.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (te sach)) ky nang x hoi. hieu ve chet duoc ban thanh van va triet*.