Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
hoc sach » hoc sinh, hoc cac, hoc anh
cau chuc » cau chu, cau phuc, canh chuc
chuc van » chu van, chuc va, thuc van
van hanh » van thanh, ban hanh, van anh
hieu ke » hieu kem, chieu ke, hieu ky
hanh di » hanh vi, hanh de, hang di
nang o » nang co, nang ho, nang ro
ke cau » ket cau
di cua » dai cua, doi cua, de cua
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: ((nuoc sach) or (hoc sach)) ky nang o hoi. hieu ke cau chuc van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) ky nang o hoi. hieu ke cau chuc van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) ky nang o hoi. hieu ke cau chuc van hanh di cua te*.