Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
dung cua » dung luan, dung cho
tan toan » tap toan, van toan, dan toan

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 - thanh dung cua nhung cong ((tan toan) OR (tan tran)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh dung cua nhung cong ((tan toan) OR (tan tran)) tap*".