Perhaps you should try some spelling variations:
thanh trung » thanh tung
chau tinh » cuu tinh, cua tinh, cac tinh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
ha tinh » va tinh, may tinh
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chau tinh) or (ha tinh)) - thanh trung cua dung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chau tinh) OR (ha tinh)) - thanh trung cua dung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chau tinh) or (ha tinh)) - thanh trung cua dung cong dan van ban*.