Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
dung duong » dong duong, dung dung, dung luong
doi chieu » doc hieu, doi chi, ho chieu
tuong dan » huong dan, tung dan, xuong dan
dung dong » dung cong, vung dong, dung trong
hoa ban » hoa dan, hoa van, hoa tan
hoa han » hoa phan, hoa dan, hoa van

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 tuong dan ((dung duong) or (dung dong)) thanh ((hoa ban) OR (hoa han))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tuong dan ((dung duong) OR (dung dong)) thanh ((hoa ban) OR (hoa han)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh tuong dan ((dung duong) or (dung dong)) thanh ((hoa ban) OR (hoa han))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tuong dan ((dung duong) or (dung dong)) thanh ((hoa ban) OR (hoa han))*.