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
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan han » dan chan, dan than, dan hanh
han tu » phan tu, hanh tu, ban tu

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 han tu~.
• 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 han tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh trang va nhung cong dan han tu*.