Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
bang cong » dang cong, bang song, hang cong
thang tu » thong tu, thanh tu, hang tu
cong tan » cong tac, cong san, cong thanh
tu bang » thu bang, tu ban, te bang
tan dan » tang dan, tan doan, ban dan

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