Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » anh tang, hanh mang, hanh tung
cong cong » cong dong, trong cong, dung cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 tang) or (hanh trang)) cua cong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh tang) OR (hanh trang)) cua cong cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh tang) or (hanh trang)) cua cong cong san toan ban*.