Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
cua viet » hoa viet, cua vat, cua dieu
sach hoi » sach doi, sach moi, cach thoi
ban cua » ban quan
va cham » va chat, va tham
sach lo » sach dao, sach doi, sach moi
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ca viet » va viet, co viet, hoa viet
luc va » duc va, tuc va, loc va
va ban » van ban, va bai, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach lo) OR (sach hoi)) nang xa hoi. hieu va cham luc va ban cua ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach lo) OR (sach hoi)) nang xa hoi. hieu va cham luc va ban cua ((cua viet) OR (ca viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach lo) OR (sach hoi)) nang xa hoi. hieu va cham luc va ban cua ((cua viet) or (ca viet))*".