Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh hoan » doanh doanh, doanh khoa, doanh nhan
thanh toan » thanh hoa, thanh san
cach thoi » cac thoi, cach thuc, cach noi
hoc doanh » hoa doanh, hoc danh, hoc dan
thoi tai » thoi dai, hoi tai, phoi tai
cong hoc » dong hoc, cong hoa, cong coc
hoan hoc » hoa hoc, toan hoc, hoang hoa
su cach » su sach, tu cach, su cac
hai van » thai van, ha van, hai tan
hoc ta » hoc tap, hoc tai, hoc tan
ta hai » tai hai, tac hai, tra hai

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 tai, nghien cua cong hoc doanh hoan hoc ta hai van ((thanh toan) or (tinh toan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach thoi tai, nghien cua cong hoc doanh hoan hoc ta hai van ((thanh toan) OR (tinh toan)).
• Adding a wildcard symbol may retrieve word variants: su cach thoi tai, nghien cua cong hoc doanh hoan hoc ta hai van ((thanh toan) or (tinh toan))*.