Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
thien hieu » thien nhien, thien chien, thien hue
thong cong » trong cong, tong cong, thong thong
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
thien ke » thiet ke
cong san » cong tac
toan tap » toan ban
han tap » han tai, nhan tai, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thien hieu) or (thien ke)) lang - hanh doanh cua thong cong san ((han tap) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thien hieu) OR (thien ke)) lang - hanh doanh cua thong cong san ((han tap) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thien hieu) or (thien ke)) lang - hanh doanh cua thong cong san ((han tap) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ((thien hieu) or (thien ke)) lang - hanh doanh cua thong cong san ((han tap) OR (toan tap))*.