Perhaps you should try some spelling variations:
bien tinh » bi tinh, diep tinh, ban tinh
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
yen tinh » tuyen tinh
cua bang » chua bang, cua ban, cua dang
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) OR (yen tinh)) - canh tranh cua bang cong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((bien tinh) OR (yen tinh)) - canh tranh cua bang cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((bien tinh) OR (yen tinh)) - canh tranh cua bang cong dan than ban*.