Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
mach hoc » cach hoc, dich hoc, anh hoc
khoa hoc » hoa hoc
tu mach » tu cach, tu manh, tu hach
cuu mon » cuu mo, cuu mot, cuu cong
va luan » vay luan, van luan, va quan
hoc xa » hoc ma
toan » tran

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 mon ((hoc doanh) or (toan doanh)) khoa hoc xa hoi va luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu mon ((hoc doanh) OR (toan doanh)) khoa hoc xa hoi va luan van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mon ((hoc doanh) or (toan doanh)) khoa hoc xa hoi va luan van*.