Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung hoc, trung tam, trung cap
cong san » cong tac
toan cao » toan tap
toan ban » van ban
ha bang » hai bang, ha tang, va bang

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 ha bang cong san ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung ha bang cong san ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ha bang cong san ((toan cao) OR (toan ban))*.