Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh tran » doanh tren, doanh thanh, doanh trong
hieu lang » hieu quang, nhieu tang, hieu van
tran dang » tran quang, tran hoang, tranh hang
dang cong » dung cong
van tan » van tuan, van tai, van thanh

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)) - hanh doanh tran dang cong ((van tan) or (van ban)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - hanh doanh tran dang cong ((van tan) OR (van ban)) ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu lang)) - hanh doanh tran dang cong ((van tan) or (van ban)) ban*.