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 » trong cong, thong thong, phong chong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
doanh cua » doanh luan
tong cong » trong cong, cong cong, dung cong
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

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