Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
vien da » vien dai, hien dai
da thuc » dan thuc, dai thuc, dam thuc
ky anh » ky danh, ly anh, ty anh
vai va » mai va, dai va, hai va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky nang) or (ky anh)) xa hoi. hieu vien da thuc ban hanh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (ky anh)) xa hoi. hieu vien da thuc ban hanh vai va triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (ky anh)) xa hoi. hieu vien da thuc ban hanh vai va triet*.