Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va
hanh va » hang va, hanh vi
loc va » hoc va
va cua » va chua, via cua, ca cua
va sac » va cac, va suc, va san
luc va » duc va, tuc va
sac ky » cac ky, sai ky
cua te » cua tu

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