Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
sach va » sach xa, sach ha, sach dao
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
va dau » va dao
dau ve » dap ve
ve cua » le cua, de cua, te cua

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 va) OR (sach y)) nang xa hoi. hieu ve cham luc va dau ve cua tre~.
• Adding a wildcard symbol may retrieve word variants: te ((sach va) or (sach y)) nang xa hoi. hieu ve cham luc va dau ve cua tre*.