Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
van duong » van dong, van dung, van phong
ho chieu » theo chieu, hoc thieu, doi chieu
va duong » va tuong, va huong, va dong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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 sang - thanh tuong ((va duong) OR (van duong)) ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh tuong ((va duong) OR (van duong)) ((cong dan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh tuong ((va duong) OR (van duong)) ((cong dan) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh tuong ((va duong) OR (van duong)) ((cong dan) or (cong san)) toan cao*.