Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tran » hanh trang, thanh tran, hanh tram
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
ty van » ly van, ta van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - hanh tran van ((cong cong) or (dung cong)) ty van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh tran van ((cong cong) OR (dung cong)) ty van ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tran van ((cong cong) or (dung cong)) ty van ban*.