Perhaps you should try some spelling variations:
danh sai » dung sai, danh dau, hanh san
va trien » va truyen, va thiet, va tuyen
hieu van » hieu va, thien van, lieu va
danh bat » doanh bat, anh bai, dinh ba
cua duc » cua tuc, cua nuoc, cua quoc
lang xa » lang ha, dang xay, lang van
nam xuc » cam xuc, nam xua, nam thuc
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
te sac » te sach, te cac, te san

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: te sac ky lang xa hoi. hieu van nam xuc va ((danh sai) OR (danh bat)) ((va trien) OR (cua duc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu van nam xuc va ((danh sai) OR (danh bat)) ((va trien) or (cua duc))~".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu van nam xuc va ((danh sai) OR (danh bat)) ((va trien) or (cua duc))*.