Perhaps you should try some spelling variations:
dung cong » dung trong
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
anh bang » anh hoang, anh quang, tinh bang
anh danh » anh anh, anh dang, anh dinh
van dung » van dong, xay dung, tin dung
cong anh » cong danh, dong anh, hong anh
tuan tap » tuan tai, tuyen tap, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - ((anh bang) or (anh danh)) van dung cong anh ((tuan tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - ((anh bang) OR (anh danh)) van dung cong anh ((tuan tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - ((anh bang) or (anh danh)) van dung cong anh ((tuan tap) or (toan tap))*.