Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
khang cong » hang cong, thanh cong, dang cong
tranh van » tran van, trinh van, thanh van
van khang » van khanh, van thanh, van quang
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
toan ban » van ban

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 - canh tranh van khang cong san ((((toan cao) or (toan ban))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh tranh van khang cong san ((((toan cao) OR (toan ban))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh tranh van khang cong san ((((toan cao) or (toan ban))) or (toan tap))*.