Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
tuan duong » tuyen duong, tuong duong, van duong
duong cong » dung cong, luong cong, duong trong
tang sach » mang sach, nang sach, tvqg sach
sang sach » mang sach, ban sach, sang tac
tran tuan » tran xuan, tran quang, tran thanh
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
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 ((tang sach) OR (sang sach)) - thanh tran tuan duong cong tac ((toan cau) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: hoc ((tang sach) or (sang sach)) - thanh tran tuan duong cong tac ((toan cau) or (toan ban))*.