Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
phong cong » phong chong, thong cong, chong cong
tong cong » trong cong, cong cong, dung cong
ho thiet » hoc thiet, hoa thiet, so thiet
tan van » tran van, tang van, luan van

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 luan ((phong cong) or (tong cong)) tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - hanh doanh luan ((phong cong) OR (tong cong)) tan van ban.
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - hanh doanh luan ((phong cong) or (tong cong)) tan van ban*.