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
hinh cua » chinh cua, sinh cua, tinh cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
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 (hinh cua)) thong cong tac than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh ((trinh luan) OR (hinh cua)) thong cong tac than ban*.