Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trinh cua » trinh luat, trinh quan, trinh luan
doan phan » doanh phan, toan phan, doanh nhan
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » sinh cua, tinh chat, tranh cua
dan phan » dan chan, van phan, dam phan

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 ((trinh cua) or (tinh cua)) nhung cong ((dan phan) OR (doan phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh cua) OR (tinh cua)) nhung cong ((dan phan) OR (doan phan)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh cua) or (tinh cua)) nhung cong ((dan phan) OR (doan phan)) cac".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh cua) or (tinh cua)) nhung cong ((dan phan) OR (doan phan)) cac*.