Perhaps you should try some spelling variations:
doanh khoa » toan khoa
thanh toan » thanh hoa, thanh san, tinh toan
hoc doanh » hoa doanh, hoc danh, hoc dan
ban thanh » ban hanh, ban hang
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
su benh » sau benh, su menh, cua benh
hoi ban » hoi dan, hoi bai, doi ban
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su benh) OR (so benh)) hoc tap, nghien cuu cong hoc doanh khoa hoc ma hoi ban thanh toan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su benh) OR (so benh)) hoc tap, nghien cuu cong hoc doanh khoa hoc ma hoi ban thanh toan".
• Adding a wildcard symbol may retrieve word variants: ((su benh) OR (so benh)) hoc tap, nghien cuu cong hoc doanh khoa hoc ma hoi ban thanh toan*.