Perhaps you should try some spelling variations:
dong thanh » truong thanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doanh cua » doanh luan
hoc dong » hoc duong, hoc cong, hoc dung
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dong thanh - canh doanh cua ((nhung cong) or (thong cong)) tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dong thanh - canh doanh cua ((nhung cong) OR (thong cong)) tan tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc dong thanh - canh doanh cua ((nhung cong) or (thong cong)) tan tran cau*.