Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh doanh » hang doanh, chinh doanh, doanh doanh
thong cong » tong cong, thong thong, phong chong
doanh cua » doanh luan
ho thiet » hoc thiet, hoa thiet, so thiet
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

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