Perhaps you should try some spelling variations:
trong thuoc » trung thuoc, trong thuong, trong cuoc
chieu sach » chinh sach, chiet tach, chieu sang
trong thuc » trong thu, thuong thuc, trong thuat
doi chieu » doc hieu, doi chi, mot chieu
cong cong » cong dong, trong cong, dung cong
cong ly » cong ty, cong li, cong my
ly van » le van, ly va, ly von

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 (trong thuc)) cong cong ly van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - sinh ((trong thuoc) OR (trong thuc)) cong cong ly van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - sinh ((trong thuoc) or (trong thuc)) cong cong ly van ban*.