Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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: ho chieu xanh - canh ((trinh van) OR (trinh han)) dang cong san ((phan cac) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - canh ((trinh van) OR (trinh han)) dang cong san ((phan cac) or (phan dau))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh ((trinh van) OR (trinh han)) dang cong san ((phan cac) or (phan dau))*.