Perhaps you should try some spelling variations:
hoc doanh » hoc danh, hoc dan, hoc nganh
hoa doanh » toan doanh, hoa dan
khoa hoc » hoa hoc
cac luan » cac luat, sach luan, cac dan
hop tap » hoc tap, hop tac, hop tai
cuu mon » cuu mo, cuu mot, cuu cong
hoa cac » hoa chat, chon cac
hoc xa » hoc ma
xa hoa » xa khoa, xa hoi, ma hoa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac hop tap, nghien cuu mon ((hoc doanh) OR (hoa doanh)) khoa hoc xa hoa cac luan van~".
• Adding a wildcard symbol may retrieve word variants: tu cac hop tap, nghien cuu mon ((hoc doanh) OR (hoa doanh)) khoa hoc xa hoa cac luan van*.