Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
tuc tuan » duc thuan, quoc tuan, tuc thanh
vien cac » vien bach, vien dai, vien da
ky danh » ky anh
cac tuc » cac toc, cac tu, cac tac
anh vai » anh va, anh bai, anh van
ky dang » ky nang
su sac » su sach, su cac, su xac

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: su sac ((ky dang) OR (ky danh)) xa hoi. hieu vien cac tuc tuan anh vai ((va triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky dang) OR (ky danh)) xa hoi. hieu vien cac tuc tuan anh vai ((va triet) or (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky dang) OR (ky danh)) xa hoi. hieu vien cac tuc tuan anh vai ((va triet) or (ve triet))*.