Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
trang luat » truong luat, trinh luat, tang luan
hieu lang » chieu sang, hieu quang, hieu van
tang luat » tang luan, nang suat, hang luan
dung cong » dung trong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((nhieu tang) or (hieu lang)) - hanh ((trang luat) OR (tang luat)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((nhieu tang) OR (hieu lang)) - hanh ((trang luat) OR (tang luat)) dung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((nhieu tang) or (hieu lang)) - hanh ((trang luat) OR (tang luat)) dung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((nhieu tang) or (hieu lang)) - hanh ((trang luat) OR (tang luat)) dung cong tac toan ban*.