Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien hach » hien hanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong tai » cong thai, cong tac, dong tai
tai phan » tai thanh, tai phong, tai ngan
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) OR (thien thanh)) - canh doanh cua bang cong tai phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien hach) OR (thien thanh)) - canh doanh cua bang cong tai phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) OR (thien thanh)) - canh doanh cua bang cong tai phan lap*.