Perhaps you should try some spelling variations:
doanh thuong » doan phuong, anh thuong, dinh thuong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thuong hoc » truong hoc, tuong hoc, thuong ho
thanh toan » thanh hoa, thanh san, tinh toan
coc doanh » cac doanh, hoa doanh, cho doanh
cach hoc » cach thuc, cach thoi, dich hoc
cong coc » cong cuoc, cong cac, cong co
te cach » ve cach, te sach, tu cach
hoi ban » hoi dan, hoi bai, doi ban
hoc bai » hoc dai, hoc giai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cach hoc tap, nghien thu cong coc doanh thuong hoc ma ((hoi ban) or (hoc bai)) thanh toan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cach hoc tap, nghien thu cong coc doanh thuong hoc ma ((hoi ban) OR (hoc bai)) thanh toan.
• Adding a wildcard symbol may retrieve word variants: te cach hoc tap, nghien thu cong coc doanh thuong hoc ma ((hoi ban) or (hoc bai)) thanh toan*.