Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tran » thanh trang, thanh toan, thanh tra
hoc thieu » toc thieu, hoc hien
van phung » van hung, van chuong, van dung
van phong » van dong, hai phong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cao » thanh ca, thanh cac, thanh thao
cong tan » cong tac, cong san, cong thanh

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 ((van phung) OR (van phong)) cong tan thanh cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tran ((van phung) or (van phong)) cong tan thanh cao*.