Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cua triet » cua viet, su triet
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, va hanh
ang xa » lang xa, mang xa, dang xay

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ang xa hoi. hieu vien cac xuc ((van hanh) or (va danh)) di ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ang xa hoi. hieu vien cac xuc ((van hanh) OR (va danh)) di ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: so sach y ang xa hoi. hieu vien cac xuc ((van hanh) or (va danh)) di ((cua triet) or (va triet))*.