Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
luan cong » luat cong, luong cong, luan chung
cong cong » cong dong, trong cong, dung cong
san toan » van toan, dan toan, manh toan

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 (hien hanh)) - hanh tranh luan cong cong ((san toan) OR (tinh toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien hanh)) - hanh tranh luan cong cong ((san toan) or (tinh toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien hanh)) - hanh tranh luan cong cong ((san toan) or (tinh toan)) cao*.