Perhaps you should try some spelling variations:
trung tran » trung thanh, trung tam, hung tran
trung tuan » trung thanh, trung tam, tran tuan
hinh sach » chinh sach, sinh sach, dinh sach
dung dong » dung cong, vung dong, dung trong
dong san » cong san, dong bang, dong von
san toan » van toan, dan toan, manh toan
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: mo hinh sach - thanh ((trung tran) or (trung tuan)) dung dong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mo hinh sach - thanh ((trung tran) OR (trung tuan)) dung dong san toan ban*.