Perhaps you should try some spelling variations:
cuu thong » cuu thuong, cuu tong, cuu chong
hoc doanh » hoc danh, hoc dan, hoc nganh
hoa doanh » toan doanh, hoa dan
mach hoc » cach hoc, dich hoc, anh hoc
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
so mach » so sach, tao mach, kon mach
hoi van » hoi va, hoi dan, hai van
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: so mach hoc tap, nghien cuu thong ((hoc doanh) or (hoa doanh)) khoa hoc ma hoi van nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so mach hoc tap, nghien cuu thong ((hoc doanh) OR (hoa doanh)) khoa hoc ma hoi van nhan tai.
• Adding a wildcard symbol may retrieve word variants: so mach hoc tap, nghien cuu thong ((hoc doanh) or (hoa doanh)) khoa hoc ma hoi van nhan tai*.