Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quan » hieu qua, lieu quan, thien quan
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 xanh) OR (hieu quan)) - thanh trung cua thong thuong ((dan than) OR (van than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu quan)) - thanh trung cua thong thuong ((dan than) OR (van than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu quan)) - thanh trung cua thong thuong ((dan than) OR (van than)) cau*.