Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
danh nhan » doanh nhan, thanh nhan, benh nhan
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
tu mach » tu cach, tu manh, tu hach
va phan » van phan, va phat, va phap
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: tu mach hoc tap, nghien cuu cong hoc doanh khoa hoc xa hoi ((va phan) or (danh nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu cong hoc doanh khoa hoc xa hoi ((va phan) OR (danh nhan)) van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu cong hoc doanh khoa hoc xa hoi ((va phan) or (danh nhan)) van*.