Perhaps you should try some spelling variations:
thanh trung » thanh tung
trien dich » mien dich
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((trien dich) or (chieu sang))) or (chiet tach)) - thanh trung cua nhung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((trien dich) OR (chieu sang))) OR (chiet tach)) - thanh trung cua nhung cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((trien dich) or (chieu sang))) or (chiet tach)) - thanh trung cua nhung cong dan than ban*.