Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
chan thong » chan thuong, chan hong, nhan thong
thong cong » trong cong, tong cong, thong thong
hieu lang » hieu quang, nhieu tang, hieu van
tung chan » quang chan, hung chanh, trong chan
dan phan » doan phan, dan chan, van phan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) OR (hieu lang)) - thanh tung chan thong cong ((dan phan) or (cao chat)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - thanh tung chan thong cong ((dan phan) OR (cao chat)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - thanh tung chan thong cong ((dan phan) or (cao chat)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - thanh tung chan thong cong ((dan phan) or (cao chat)) cau*.