Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
chuan dao » chuan doan, chuan iso, chuan ha
doanh » toanh, soanh, hoanh
doan » toan, soan, hoan

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 xanh) OR (chieu sang)) - doanh doanh cua thong thong dan ((chuan dao) or (chan doan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - doanh doanh cua thong thong dan ((chuan dao) OR (chan doan))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - doanh doanh cua thong thong dan ((chuan dao) or (chan doan))*".