Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
thong cong » tong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
tung tuan » trung tuan, hung tuan, quang tuan
bang toan » bong toan, dang toan, bang thanh
toan ban » van ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung tuan ((thong cong) OR (trong cong)) bang toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung tuan ((thong cong) or (trong cong)) bang toan ban*.