Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh thanh, dong doanh
thanh phan » thanh pho, thanh san, thanh toan
doanh hoan » doanh khoa, doanh nhan, doanh luan
ban thanh » ban hanh, ban hang
hoc doanh » hoa doanh, hoc danh, hoc dan
cong hoc » dong hoc, cong hoa, cong coc
cuu cong » cua cong, thu cong, cac cong
thoi dai » hoc dai, hoi dap, hoi dan
thoi tap » toi tap, hoc tap, hoi tai
hoan va » khoan va, hoang va, doan va
doi ban » di ban, do ban, dong ban
su cach » su sach, tu cach, su cac
va doi » va dai, va doc, va do

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach ((thoi tap) or (thoi dai)), nghien cuu cong hoc doanh doanh hoan va doi ban thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach ((thoi tap) OR (thoi dai)), nghien cuu cong hoc doanh doanh hoan va doi ban thanh phan.
• Adding a wildcard symbol may retrieve word variants: su cach ((thoi tap) or (thoi dai)), nghien cuu cong hoc doanh doanh hoan va doi ban thanh phan*.