Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
soc dan » hoc dan, so dan, sac dan
sac van » cac van, san van, sat van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
anh te » anh tu, anh ta, anh ve

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 nang xa hoi. hieu vu cham ((soc dan) OR (sac van)) anh te ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu vu cham ((soc dan) or (sac van)) anh te ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu vu cham ((soc dan) or (sac van)) anh te ((cua triet) OR (cua viet))*.