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 trinh, truong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong ty
tran tap » toan tap, tran tan, tran tuan

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 va nhung ((cong tan) OR (cong thanh)) tran tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh dung va nhung ((cong tan) OR (cong thanh)) tran tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh dung va nhung ((cong tan) OR (cong thanh)) tran tap*.