Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
van toan » van tuan, van tan, van 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 trinh cua ((hang cong) or (bang cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh cua ((hang cong) OR (bang cong)) van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh cua ((hang cong) or (bang cong)) van toan cau*.