Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
chao chu » cho chu, cua chu, cao cho
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: ((theo tieu) or (chao chu)) tinh - thanh trung cua nhung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (chao chu)) tinh - thanh trung cua nhung cong van toan ban*.