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

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) OR (cong tac)) han tai~.
• 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) OR (cong tac)) han tai.
• 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) OR (cong tac)) han tai".
• Adding a wildcard symbol may retrieve word variants: ((thien hieu) or (thien ke)) lang - hanh doanh cua thong ((cong san) OR (cong tac)) han tai*.