Perhaps you should try some spelling variations:
bien tinh » bi tinh, yen tinh, diep tinh
chua bang » chu bang, chua nang, chua xang
hoc bien » hoc hien, hoc vien, hoa bien
cua bang » cua ban, cua dang, cua hang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc bien tinh - canh tranh ((cua bang) OR (chua bang)) cong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc bien tinh - canh tranh ((cua bang) OR (chua bang)) cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: hoc bien tinh - canh tranh ((cua bang) OR (chua bang)) cong dan than ban*.