Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh dung » thanh duong, thanh tung, thanh hung
hieu lang » hieu quang, nhieu tang, hieu van
hang cong » dang cong, hang nong, bang cong
dung thi » dung tai, dung tri, dung chi
thi hang » thi hanh, thi nang, thi hong
doan tap » toan tap, doan cap, doanh tai
ty doan » ty doanh, tap doan, ly doanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) or (hieu lang)) - thanh dung thi hang cong ty doan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu lang)) - thanh dung thi hang cong ty doan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu lang)) - thanh dung thi hang cong ty doan tap*.