Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh sang » thanh san, thanh hang, thanh hoang
sang trong » lang trong, mang trong, nang trong
hieu lang » chieu sang, hieu quang, nhieu tang
trong dan » trong dang, trong san, trong tan
dan than » dan chan, ban than, van than
than man » than ma, thanh san, tran manh

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) or (chieu tinh)) - tinh quang thanh sang trong dan than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu lang) OR (chieu tinh)) - tinh quang thanh sang trong dan than man.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu lang) or (chieu tinh)) - tinh quang thanh sang trong dan than man*.