Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
sach vu » sach va, sach uu, sach xu
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((sach vu) or (sach tu)) nang xa hoi. hieu va cham luc va hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sach vu) OR (sach tu)) nang xa hoi. hieu va cham luc va hanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc ((sach vu) or (sach tu)) nang xa hoi. hieu va cham luc va hanh de cua tre*.