Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
dan chan » dan gian, dan ca, van chat

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