Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
vi va » vai va, vu va, bi va

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