Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
pdung cong » phung cong, dang cong, duong cong
hanh tran » hanh trang, thanh tran, hanh tram
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 ((dung cong) or (pdung cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh tran van ((dung cong) OR (pdung cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tran van ((dung cong) or (pdung cong)) dan toan cao*.