Perhaps you should try some spelling variations:
lanh doanh » hanh doanh, doanh doanh, kinh doanh
thien hieu » thien nhien, thien chien, thien hue
doanh cua » doanh luan
tong cong » trong cong, cong cong, dung cong
thien ke » thiet ke
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
than tap » toan tap, han tap, than cap
phan tap » phan lap, han tap, pha tap

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 - lanh doanh cua tong cong san ((than tap) OR (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thien hieu) OR (thien ke)) lang - lanh doanh cua tong cong san ((than tap) OR (phan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thien hieu) or (thien ke)) lang - lanh doanh cua tong cong san ((than tap) OR (phan tap))".
• Adding a wildcard symbol may retrieve word variants: ((thien hieu) or (thien ke)) lang - lanh doanh cua tong cong san ((than tap) OR (phan tap))*.