Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
lanh manh » lanh tranh, lan anh, van manh
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
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: doi ((chieu sang) or (chiet tach)) - ((cach mang) or (lanh manh)) va dung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chiet tach)) - ((cach mang) OR (lanh manh)) va dung cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chiet tach)) - ((cach mang) or (lanh manh)) va dung cong dan than tap*.