Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung hieu » thuong hieu, trung kien, trong hiep
hieu thong » lieu thong, hieu tuong, sieu thong
cong tuan » cong luan, cong thanh, cong quang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh trung hieu thong ((cong tuan) OR (cong tan)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung hieu thong ((cong tuan) OR (cong tan)) van ban*".