Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, mot chieu
dai thang » danh thang, tai thanh, dai han
cong dang » cong dong, cong dan, cong dung
dai hang » dai han, dat hang, dai dang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh thuong ((dai hang) or (dai thang)) cong dang ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh thuong ((dai hang) OR (dai thang)) cong dang ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh thuong ((dai hang) or (dai thang)) cong dang ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh thuong ((dai hang) or (dai thang)) cong dang ((toan tap) OR (toan ban))*.