Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, anh thanh
thanh hoat » thanh hoa, thanh hoai, thanh hoang
hieu lang » chieu sang, hieu quang, nhieu tang
hoat dung » hoat dong, hoang dung, hoai duong
trong dan » trong dang, trong san, trong tan
doi hieu » doi chieu, doc hieu, doi hien
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - canh thanh hoat dung trong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - canh thanh hoat dung trong dan van ban*.