Perhaps you should try some spelling variations:
tran vann » tan van, tran vinh, tran manh
hung cong » nhung cong, hung cuong, phung cong
cong tang » cong thang, cong tan, cong lang
chu xanh » chu manh, chieu xanh, chua xang
tran van » luan van
tang van » dang van, hoang van, trong van
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: cua chu xanh - hanh ((tran vann) or (tran van)) hung cong tang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cua chu xanh - hanh ((tran vann) OR (tran van)) hung cong tang van ban*.