Perhaps you should try some spelling variations:
nhan vat » nhan va, nhan tai, nhan dan
te sach » toc sach
hieu va » hieu qua
cac tac » cac toc, cac bac, cac dac
va nhan » van nhan, ca nhan, va phan
vat cua » mat cua, bat cua, dat cua
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
tac va » tac da, tac xa, tuc va
o hoi » co hoi, o hoc, o hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) o hoi. ((hieu va) OR (lieu va)) cac tac va nhan vat cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (ky nang)) o hoi. ((hieu va) OR (lieu va)) cac tac va nhan vat cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ky nang)) o hoi. ((hieu va) OR (lieu va)) cac tac va nhan vat cua tre*.