Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
tung cua » trung cua, tuong cua, dung cua
dan toan » van toan, dan than, 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: hoc ((chieu sach) or (chiet tach)) - thanh tung cua thong thong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - thanh tung cua thong thong dan toan ban*.