Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo thuoc » che thuoc, tao thuoc, thu thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong lang » cong vang, cong luong, cong quang
cong san » cong tac
ban ban » ban banh, van ban, can ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo thuoc sach - thanh trung cua thong ((cong san) or (cong lang)) ban ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo thuoc sach - thanh trung cua thong ((cong san) OR (cong lang)) ban ban.
• Adding a wildcard symbol may retrieve word variants: theo thuoc sach - thanh trung cua thong ((cong san) or (cong lang)) ban ban*.