Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh hang » thanh hang, hang hang, hanh mang
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
cong tac » cong ty
toan cao » toan tap
toan ban » van ban

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 hang) OR (hanh han)) cua nhung cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh hang) OR (hanh han)) cua nhung cong tac ((toan cao) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh hang) OR (hanh han)) cua nhung cong tac ((toan cao) or (toan ban))*".