Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
banh tran » banh trang, ban tran, canh tranh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
tran van » luan van
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - banh tran van ((hang cong) or (bang cong)) dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - banh tran van ((hang cong) OR (bang cong)) dan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - banh tran van ((hang cong) or (bang cong)) dan phan dau*.