Perhaps you should try some spelling variations:
thanh trung » thanh tung
cua truong » cua trung, xuan truong, cac truong
cua phuong » cuu phuong, cuc phuong, luan phuong
tieu sach » chieu sach, dien sach, te sach
cua huong » cua thuong, cua cong, cua nhung
dong tac » cong tac, dong tai, dong bac
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu

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: theo tieu sach - thanh trung ((((cua truong) OR (cua huong))) OR (cua phuong)) dong tac phan cau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh trung ((((cua truong) or (cua huong))) or (cua phuong)) dong tac phan cau*.