Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
tuc tuan » duc thuan, quoc tuan, tuc thanh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
ky danh » ky dang
vien da » vien dai, hien dai
anh vai » anh bai, anh van, anh tai
ky anh » ly anh, ty anh
da tuc » dao tuc, va tuc, da tac
anh va » hanh va

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