Perhaps you should try some spelling variations:
chiet tach » chieu sach
trinh luan » trinh luat, trinh quan, trinh han
thong cong » trong cong, tong cong, thong thong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
chinh sua » chinh su, chinh cua, chinh luan
cong san » cong tac
san than » sang than, san thanh, ban than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh ((trinh luan) or (chinh sua)) thong cong san than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh ((trinh luan) OR (chinh sua)) thong cong san than ban*.