Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong tan, cong va
song van » hoang van, trong van, duong van
cong san » cong tac
phan cau » phan dau, phan cac, phan 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 - canh tranh cua nhung ((((cong van) or (song van))) or (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua nhung ((((cong van) OR (song van))) OR (cong san)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua nhung ((((cong van) or (song van))) or (cong san)) phan cau*.