Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan van » nhan va, phan van, nha van
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach

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 dong hoc nganh khong thuoc xa hoi va ((nhan van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu dong hoc nganh khong thuoc xa hoi va ((nhan van) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu dong hoc nganh khong thuoc xa hoi va ((nhan van) or (nhan dan))*.