Perhaps you should try some spelling variations:
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
hien tinh » khien tinh, thien tinh, bien tinh
tranh cua » manh cua
dan thanh » dang thanh, danh thanh, ban thanh
thanh ban » thanh san, thanh van, thanh bac
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung cong dan thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((tranh cua) OR (((doanh cua) OR (doanh luan)))) nhung cong dan thanh ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung cong dan thanh ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh ((tranh cua) or (((doanh cua) OR (doanh luan)))) nhung cong dan thanh ban*.