Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
khong hang » khong cang, khong hanh, thong hoang
tam khong » ta khong, tao khong, tam thuong
hang ban » hang luan, hang va, hang tai
ban hanh » ban hang
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - thanh trung tam khong hang ban hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - thanh trung tam khong hang ban hanh cac*.