Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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 trang cua nhung ((cong tan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trang cua nhung ((cong tan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trang cua nhung ((cong tan) or (cong san)) toan cau*.