Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
chieu xanh » chieu sach, chieu sang, chieu tinh
tran thanh » ban thanh, van thanh, quan thanh
hieu xanh » hieu manh, hieu nganh, dieu hanh
doanh cua » doanh luan
cua trung » cua truong, xuan trung, cua nhung
dcong tan » duong tan, cong tac, dong tai
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh cua trung ((cong tan) or (dcong tan)) tran thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh cua trung ((cong tan) OR (dcong tan)) tran thanh.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - hanh doanh cua trung ((cong tan) or (dcong tan)) tran thanh".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh cua trung ((cong tan) or (dcong tan)) tran thanh*.