Perhaps you should try some spelling variations:
thuong thong » thong thong, thuong trong, thuong phuong
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
ca thuong » cao thuong, cua thuong, va thuong
danh toan » manh toan, dan toan, dang toan
trung ca » trung cap, truong ca, trung cua
anh toan » manh toan, anh tuan, thanh toan

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

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