Perhaps you should try some spelling variations:
trung thuoc » trung thuc, trung quoc, trung hoc
chieu sach » chinh sach, chiet tach, chieu sang
trong thuc » trong thu, thuong thuc, trong thuat
doi chieu » doc hieu, doi chi, mot chieu
tong cong » trong cong, cong cong, dung cong
toan ban » van ban
ty toan » ly toan, tap toan, huy 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 - sinh ((trung thuoc) or (trong thuc)) tong cong ty toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - sinh ((trung thuoc) OR (trong thuc)) tong cong ty toan ban*.