Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien huu » nghien cuu, nguyen huu, nhiem huu
khoa nganh » khoi nganh, hoc nganh
khong hoc » khung hoc, thong hoc, khong thuoc
huu toan » huu tuan, cuu toan, huy toan
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu hach, tu sach
tu manh » tu minh, tu hanh, vu manh
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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