Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
cong thanh » dong thanh, cong tan, truong thanh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
toan tap » toan 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 - thanh dung cua nhung ((cong thanh) OR (cong trinh)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh dung cua nhung ((cong thanh) OR (cong trinh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh dung cua nhung ((cong thanh) OR (cong trinh)) toan tap*.