Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu tinh, hieu manh
chieu sang » hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, hieu cach
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
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 ((((chieu xanh) or (chieu sang))) or (chieu sach)) - thanh trung cua dung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (chieu sang))) OR (chieu sach)) - thanh trung cua dung cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu xanh) or (chieu sang))) or (chieu sach)) - thanh trung cua dung cong dan than ban*.