Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
cach hoc » cach thuc, cach thoi, dich hoc
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
nhan dan » phan dau, nhan tai
gian dan » gian lang
tu cach » tu cac
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 tap, nghien cua cong hoc nganh khoa hoc ma hoi va ((nhan dan) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien cua cong hoc nganh khoa hoc ma hoi va ((nhan dan) OR (gian dan)).
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien cua cong hoc nganh khoa hoc ma hoi va ((nhan dan) or (gian dan))*.