Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong san » cong tac
san chan » san chang, dan chan, san chay
chan ban » can ban, chat ban, chan nan

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 (hieu lang)))) - thanh trung cua nhung cong san chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (((chieu sang) OR (hieu lang)))) - thanh trung cua nhung cong san chan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - thanh trung cua nhung cong san chan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - thanh trung cua nhung cong san chan ban*.