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, tinh toan
hoc doanh » hoa doanh, hoc danh, hoc dan
sach hoi » sach doi, sach moi, cach thoi
cong hoc » dong hoc, cong hoa, cong coc
hoan hoc » hoa hoc, toan hoc, hoang hoa
su sach » so sach, vu sach
hoi tai » hoc tai, hoi trac
hai ban » hai bang, hai ba, tai ban
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoi tai, nghien cua cong hoc doanh hoan hoc xa hai ban ((thanh toan) OR (thanh san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoi tai, nghien cua cong hoc doanh hoan hoc xa hai ban ((thanh toan) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: su sach hoi tai, nghien cua cong hoc doanh hoan hoc xa hai ban ((thanh toan) OR (thanh san))*.