Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
thanh tung » thanh cong
phan cong » thanh cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
va phan » van phan, va phat, va phap

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