Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
cao nhung » cho nhung, cam nhung, cao chung
anh nang » ganh nang, anh bang, anh dang
cong hai » cong thai, hoang hai, cong tac
toan ban » van ban
cong ha » cong hoa, dong ha, cong tac

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: hoc ((hien xanh) OR (chieu xanh)) - anh nang cao nhung ((cong hai) OR (cong ha)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - anh nang cao nhung ((cong hai) OR (cong ha)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - anh nang cao nhung ((cong hai) OR (cong ha)) toan ban*.