Perhaps you should try some spelling variations:
hien thanh » thien thanh, tien thanh, dien thanh
doanh luan » doanh nhan
luan nhung » luan chung, luan hung, quan nhung
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hien hanh » dieu hanh
toan cao » toan ban, toan tap

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 thanh) OR (hien hanh)) - toan doanh luan nhung ((cong thanh) or (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien thanh) OR (hien hanh)) - toan doanh luan nhung ((cong thanh) OR (dong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien thanh) OR (hien hanh)) - toan doanh luan nhung ((cong thanh) or (dong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien thanh) OR (hien hanh)) - toan doanh luan nhung ((cong thanh) or (dong thanh)) toan cao*.