Perhaps you should try some spelling variations:
trong thuoc » trong thuc, trung thuoc, trong thuong
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, mot chieu
tong cong » trong cong, cong cong, dung cong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
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: doi chieu sach - sinh ((trong thuoc) or (thuong thuc)) tong cong hach toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - sinh ((trong thuoc) OR (thuong thuc)) tong cong hach toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - sinh ((trong thuoc) or (thuong thuc)) tong cong hach toan ban*.