Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
suat cong » luat cong, xuat cong, sat cong
van nang » van quang, van ban, van dong
dong dan » dong danh, duong dan, dong san
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hop ((chieu sang) or (chieu sach)) - van nang suat cong dong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hop ((chieu sang) OR (chieu sach)) - van nang suat cong dong dan than cap*.