Perhaps you should try some spelling variations:
dung cong » dung trong
hieu lang » chieu sang, hieu quang, nhieu tang
cong danh » cuong danh, cong dan, cong thanh
danh tuan » anh tuan, manh tuan, danh thanh
doi hieu » doi chieu, doc hieu, doi hien
anh tang » anh bang, anh nang, anh sang
anh dang » anh dong, anh dung, anh bang
van dung » van dong, xay dung, tin dung
tuan tap » toan tap, tuan tai, tuyen tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - ((anh tang) or (anh dang)) van dung cong danh tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - ((anh tang) OR (anh dang)) van dung cong danh tuan tap*.