Perhaps you should try some spelling variations:
bien tinh » bi tinh, yen tinh, diep tinh
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
thanh ban » thanh san, thanh van, thanh bac
hoc bien » hoc hien, hoc vien, hoa bien
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
than man » than ma, thanh san, tran manh

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 cong dan ((than man) or (thanh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc bien tinh - canh tranh cua bang cong dan ((than man) OR (thanh ban)).
• Adding a wildcard symbol may retrieve word variants: hoc bien tinh - canh tranh cua bang cong dan ((than man) or (thanh ban))*.