Perhaps you should try some spelling variations:
sach kem » hanh kem
doanh va » doan va, doanh tai, doanh cua
va doanh » van doanh, vay doanh, va danh
cham luc » cham soc, nhan luc, cham cuu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
sac ky » sai ky
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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 kem) or (((sac ky) OR (cac ky)))) nang xa hoi. hieu ve cham luc va doanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (((sac ky) OR (cac ky)))) nang xa hoi. hieu ve cham luc va doanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach kem) or (((sac ky) OR (cac ky)))) nang xa hoi. hieu ve cham luc va doanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (((sac ky) OR (cac ky)))) nang xa hoi. hieu ve cham luc va doanh va cua tre*.