Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh toan » tinh toan, thanh toan, trinh han
doi chieu » doc hieu, doi chi, ho chieu
trinh van » trinh han, trinh quan, dinh van
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
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.

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