Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va thuong, he thong, va cong
cong tac » cong ty
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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 dung ((va thong) OR (va phuong)) cong tac ((than cao) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh dung ((va thong) OR (va phuong)) cong tac ((than cao) OR (than cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh dung ((va thong) OR (va phuong)) cong tac ((than cao) or (than cap))*".