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

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