Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach 2, sach vay
va dan » ca dan, va dau, va dap
va dao » ca dao
x hoi » xa hoi, o hoi, x ho

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 v) OR (sach y)) nang x hoi. hieu ve cham luc ((va dan) OR (va dao)) dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach y)) nang x hoi. hieu ve cham luc ((va dan) OR (va dao)) dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach y)) nang x hoi. hieu ve cham luc ((va dan) OR (va dao)) dai cua tre*.