Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
dung cong » dung trong
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap
va dung » van dung, va duong, vat dung

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