Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh luan » trinh luat, trinh quan, trinh han
doi chieu » doc hieu, doi chi, mot chieu
tinh tuan » trinh tuan, tinh toan, minh tuan
cong doan » cong dan, cong hoan, dong doanh
doan van » doan va, hoang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - nhanh ((tinh tuan) or (trinh luan)) thanh cong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - nhanh ((tinh tuan) OR (trinh luan)) thanh cong doan van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - nhanh ((tinh tuan) or (trinh luan)) thanh cong doan van ban*.