Perhaps you should try some spelling variations:
dung sai » dung tai, dung va, dung dat
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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: te sach ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) dung sai ((va triet) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) dung sai ((va triet) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) dung sai ((va triet) or (cua te))*.