Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong van » cong vang, cong tan, cong va
cong san » cong tac
song van » hoang van, trong van, duong van
tai cau » tai cac, tai cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh cua nhung ((((cong van) or (cong san))) or (song van)) tai cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh cua nhung ((((cong van) OR (cong san))) OR (song van)) tai cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua nhung ((((cong van) or (cong san))) or (song van)) tai cau*.