Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
cua nhung » va nhung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 (hanh trinh)) cua nhung ((cong tan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh tranh) OR (hanh trinh)) cua nhung ((cong tan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh tranh) or (hanh trinh)) cua nhung ((cong tan) or (cong tac)) toan cau*.