Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
hieu lang » hieu quang, nhieu tang, hieu van
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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