Perhaps you should try some spelling variations:
banh trang » hanh trang, ban trang, banh rang
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
dang cong » dung cong
cong cong » cong dong, trong cong, dung cong
trang va » tran van, hang va
ban ha » ban nha, ban ham, ban pha

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)) - banh trang va ((dang cong) or (cong cong)) van ban ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - banh trang va ((dang cong) OR (cong cong)) van ban ha.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - banh trang va ((dang cong) or (cong cong)) van ban ha*.