Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hinh trong » chinh trong, dinh trong, sinh trong
trong cham » trang cham, trong cac, trong nha
cham bang » cao bang, chat ban, nham nang
cong tac » cong ty
toan cao » toan ban, toan tap
cong ha » cong hoa, dong ha, cong san

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) or (chieu xanh)) - hinh trong cham bang ((cong ha) OR (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - hinh trong cham bang ((cong ha) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu xanh)) - hinh trong cham bang ((cong ha) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu xanh)) - hinh trong cham bang ((cong ha) OR (cong tac)) toan cao*.