Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
viec cac » viec cua, viec lam, viec va
hanh va » hang va, hanh vi
nang xa » nang x, lang xa, nang ma
luc van » luoc van, luu van, duc van
vu san » vu ban
va cua » va chua, via cua, ca cua
cua te » cua tu
va san » va ban

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: ((vu san) OR (va san)) ky nang xa hoi. hieu ((viec cac) OR (vien cac)) luc van hanh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu san) OR (va san)) ky nang xa hoi. hieu ((viec cac) or (vien cac)) luc van hanh va cua te~".
• Adding a wildcard symbol may retrieve word variants: ((vu san) OR (va san)) ky nang xa hoi. hieu ((viec cac) or (vien cac)) luc van hanh va cua te*.