Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, tien thanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
cong thanh » dong thanh, cong trinh, truong thanh
doanh cua » doanh luan
cua nhung » va nhung
cong tan » cong tac, cong san, cong ty
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 - hanh doanh cua nhung ((cong tan) or (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien thanh - hanh doanh cua nhung ((cong tan) OR (cong thanh)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien thanh - hanh doanh cua nhung ((cong tan) or (cong thanh)) toan cao*.