Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hanh doanh » hang doanh, chinh doanh, doanh doanh
mot chieu » doi chieu, ho chieu
doanh cua » doanh luan
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
phan dau » hang dau

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

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