Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
dan toan » van toan, dan than, manh toan
anh toan » manh toan, anh tuan, thanh toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((hanh tranh) or (canh tranh)) cua thong cong ((dan toan) or (anh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh tranh) OR (canh tranh)) cua thong cong ((dan toan) OR (anh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh tranh) or (canh tranh)) cua thong cong ((dan toan) or (anh toan)) cau*.