Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
dung luong » dung thuong, dung phuong, dung truong
hanh dung » thanh dung, anh dung, hanh dong
cong cong » trong cong, dung cong, dang cong
san thanh » ban thanh, van thanh, son thanh
thanh cha » thanh ha, thanh nha, thanh phan

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