Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
hien xanh » hien hanh, hien nhanh, chieu xanh
cong cong » trong cong, dung cong, dang cong
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan 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 - hanh trinh luan ((cong cong) OR (cong dong)) ((dan toan) OR (manh toan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trinh luan ((cong cong) OR (cong dong)) ((dan toan) or (manh toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh luan ((cong cong) OR (cong dong)) ((dan toan) or (manh toan)) cao*.