Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
thanh lap » thanh san, phan lap, thanh hai
thanh nha » thanh nhan, thanh ha, thanh nga
cua dung » cua dang, cua dong, qua dung
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) OR (chieu sang)) - thanh trung cua dung cong san ((thanh lap) or (thanh nha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu sang)) - thanh trung cua dung cong san ((thanh lap) OR (thanh nha))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) OR (chieu sang)) - thanh trung cua dung cong san ((thanh lap) or (thanh nha))*".