Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
nhan tong » nhan trong, nhan thong, nhan tuong
hach hoc » cach hoc, mach hoc, hoach hoi
khoa hoc » hoa hoc
nhan tao » nhan tai, nhan dan
tu hach » tu hanh, tu cach, tu sach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
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: tu hach hoc tap, nghien cuu mot hoc nhanh khoa hoc ma hoi va ((nhan tong) or (nhan tao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach hoc tap, nghien cuu mot hoc nhanh khoa hoc ma hoi va ((nhan tong) OR (nhan tao)).
• Adding a wildcard symbol may retrieve word variants: tu hach hoc tap, nghien cuu mot hoc nhanh khoa hoc ma hoi va ((nhan tong) or (nhan tao))*.