Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
thong quang » thong quan, thong qua, luong quang
hieu nganh » vien nganh, hieu manh, nghiep nganh
quang lang » quan lang, quang dang, quang hoang
lang muong » lang tuong, long muong, nang luong
hiem ngan » kim ngan, viem gan
muong dan » huong dan, muong van, tuong dan
dan toan » van toan, dan than, manh 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: doc ((hieu nganh) or (hiem ngan)) - thanh thong quang lang muong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hiem ngan)) - thanh thong quang lang muong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (hiem ngan)) - thanh thong quang lang muong dan toan ban*.