Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, anh thanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
manh hung » anh huong
hoang van » hang va
doc hieu » toc thieu, hoc thieu, hoc hien
van hung » van dung, van duong, van dong
van van » van ban, tan van, san van
van tai » von tai, van tuan

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 xanh - canh thanh ((van hung) or (manh hung)) hoang van van tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh thanh ((van hung) OR (manh hung)) hoang van van tai*.