Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh luan » trinh luan, trinh luat, doanh luan
nhung cong » dung cong, thong cong, hang cong
cong trong » cong thuong, duong trong, cong trinh
trong van » trong cac
ho chieu » theo chieu, hoc thieu, doi chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh ((tranh luan) or (tran quang)) nhung cong trong van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tranh luan) OR (tran quang)) nhung cong trong van ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tranh luan) or (tran quang)) nhung cong trong van ban*.