Perhaps you should try some spelling variations:
doan thien » hoan thien, doan thi
toan thiet » hoan thien, luan thiet, toan tien
hanh doanh » hang doanh, chinh doanh, doanh doanh
phuong dan » phuong danh, phuong doan, huong dan
doanh cua » doanh luan
cua bang » chua bang, cua ban, cua dang
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doan thien) OR (toan thiet)) thanh - hanh doanh cua bang phuong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doan thien) OR (toan thiet)) thanh - hanh doanh cua bang phuong dan van ban".
• Adding a wildcard symbol may retrieve word variants: ((doan thien) OR (toan thiet)) thanh - hanh doanh cua bang phuong dan van ban*.