Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thanh duong » thanh huong, thanh cuong, thanh vuong
doanh nhanh » doanh nhan, doanh thanh, danh thanh
thieu sang » chieu sang, thieu khang, hieu lang
thong dong » thong duong, thuong dong, thong cong
duong cua » dung cua, huong cua, duong qua
cua thong » cua thuong, cua khong, cua tong
danh nhan » doanh nhan, thanh nhan, benh nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) OR (thieu quang)) - thanh duong cua thong dong ((doanh nhanh) or (danh nhan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - thanh duong cua thong dong ((doanh nhanh) OR (danh nhan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu quang)) - thanh duong cua thong dong ((doanh nhanh) or (danh nhan)) tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu quang)) - thanh duong cua thong dong ((doanh nhanh) or (danh nhan)) tu*.