Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac
am dung » am duong, lam dung, ap dung

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 - ((thanh trung) OR (thanh tung)) am dung cong san ((than cap) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((thanh trung) OR (thanh tung)) am dung cong san ((than cap) or (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((thanh trung) OR (thanh tung)) am dung cong san ((than cap) or (khan cap))*.