Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
soc van » hoc van, oc van, sac van
san ky » sang ky, dan ky, ban ky
anh ve » hanh ve, anh viet, thanh ve
anh va » hanh va
cua su » qua su

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: tu ((san ky) OR (van ky)) nang xa hoi. hieu vu cham soc van ((anh ve) OR (anh va)) cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (van ky)) nang xa hoi. hieu vu cham soc van ((anh ve) or (anh va)) cua su~".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) OR (van ky)) nang xa hoi. hieu vu cham soc van ((anh ve) or (anh va)) cua su*.