Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
thong cong » trong cong, tong cong, thong thong
hieu lang » hieu quang, nhieu tang, hieu van
thang va » hang va, trang va, thong va
va thong » va thuong, va phuong, he thong
cong tap » cuong tap, cong tac, cong tan
tap dan » tap doan, tap danh, tap van

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)) - nhanh thang va thong cong tap dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu lang)) - nhanh thang va thong cong tap dan ca*.