Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chinh doanh » kinh doanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hien hach » thien hach, hien hanh, hien nhanh
doanh cua » doanh luan
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: hoc ((hien hach) or (thien thanh)) - chinh doanh cua ((nhung cong) OR (thong cong)) dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hach) OR (thien thanh)) - chinh doanh cua ((nhung cong) OR (thong cong)) dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hach) or (thien thanh)) - chinh doanh cua ((nhung cong) OR (thong cong)) dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hach) or (thien thanh)) - chinh doanh cua ((nhung cong) OR (thong cong)) dan toan ban*.