Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
nang luan » tang luan, nang quan, bang luan
hang luan » tang luan, dung luan
hang nong » thang long, han tong
bang cong » dang cong, bang song, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - anh ((nang luan) or (hang luan)) ((hang nong) or (bang cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - anh ((nang luan) OR (hang luan)) ((hang nong) OR (bang cong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - anh ((nang luan) or (hang luan)) ((hang nong) or (bang cong)) dan than cau*.