Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
quan dang » quang dang, quan lang, quan dong
dang cong » dung cong
canh ban » can ban, canh dan, canh van
ban quan » van quan
van than » van thanh, van thang, ban than
van phan » van phong, van thanh, luan phan
van tuan » van quan, van ban, anh tuan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh ban quan dang cong ((((van than) OR (van phan))) OR (van tuan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh ban quan dang cong ((((van than) OR (van phan))) or (van tuan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh ban quan dang cong ((((van than) OR (van phan))) or (van tuan)) cau*.