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