Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
cao chung » cho chuong, chon chung, cao cong
cac chung » cac phuong, cac cong
tran tuan » tran xuan, tran quang, tran thanh
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren

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) OR (hieu lang)) - thanh truong ((cao chung) or (cac chung)) cong tac tran tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh truong ((cao chung) OR (cac chung)) cong tac tran tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - thanh truong ((cao chung) or (cac chung)) cong tac tran tuan".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - thanh truong ((cao chung) or (cac chung)) cong tac tran tuan*.