Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tran » thanh trang, thanh toan, thanh tuan
quang dung » quang trung, ung dung, cuong dung
hoc thieu » toc thieu, hoc hien
thanh tra » thanh toan, thanh hoa
trong ban » trong san, trong tan, trong quan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap

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 tran) OR (thanh tra)) quang dung trong ban toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh tran) or (thanh tra)) quang dung trong ban toan cau*.