Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh khoa » nganh hoa, nganh khong, doanh khoa
goc nganh » hoc nganh, hoc nhanh, cac nganh
cach hoc » cach thuc, cach thoi, dich hoc
khoa hoc » hoa hoc
gian dan » gian lang
tu cach » tu cac
hoc tai » hoc dai, hoc tap, hoc bai
huu mot » cuu mot, huy mot, hieu mot
nhan va » nhan tai, nhan dan, nhan tao
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 cach hoc tai, nghien huu mot goc nganh khoa hoc ma hoi va ((nhan va) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tai, nghien huu mot goc nganh khoa hoc ma hoi va ((nhan va) OR (gian dan)).
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tai, nghien huu mot goc nganh khoa hoc ma hoi va ((nhan va) or (gian dan))*.