Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » thong cong, hang cong, nhung don
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
van tuan » van quan, van ban, anh tuan
tuan cau » toan cau, quan cau, tuan cu

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) or (hien hanh)) - hanh trang cua ((nhung cong) OR (dung cong)) van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh trang cua ((nhung cong) OR (dung cong)) van tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien hanh)) - hanh trang cua ((nhung cong) OR (dung cong)) van tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh trang cua ((nhung cong) OR (dung cong)) van tuan cau*.