Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
luat hoi » luat moi, luat so, luat dai
hieu ve » hieu va
ky dang » ky nang, ky danh
va hanh » van hanh, va thanh, va danh
lai hoi » dai hoi, lai hoa, lai roi
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky dang ((luat hoi) or (lai hoi)). ((hieu ve) OR (hieu van)) cam xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang ((luat hoi) OR (lai hoi)). ((hieu ve) OR (hieu van)) cam xuc va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang ((luat hoi) or (lai hoi)). ((hieu ve) OR (hieu van)) cam xuc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang ((luat hoi) or (lai hoi)). ((hieu ve) OR (hieu van)) cam xuc va hanh vi cua te*.