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, tinh toan
hoc doanh » hoa doanh, hoc danh, hoc dan
sach moi » sach doi, sach hoi, bach mai
cong hoc » dong hoc, cong hoa, cong coc
hoan hoc » hoa hoc, toan hoc, hoang hoa
su sach » so sach, vu sach
moi tai » hoi tai, mo tai, moi thoi
hai ban » hai bang, tai ban, hai tan
hoc xa » hoc ma

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