Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
hien sach » kien sach, thien hach, chieu sach
dien sach » dien anh
tuan hang » tuan hoang, tuan bang, tuan dang
cong dan » cong san, cong tan, cong dong
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (dien sach)) - thanh trung tuan hang ((cong dan) or (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (dien sach)) - thanh trung tuan hang ((cong dan) OR (huong dan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (dien sach)) - thanh trung tuan hang ((cong dan) or (huong dan)) toan ban*.