Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
thoi tap » toi tap, hoc tap, thoi dai
khoa hoc » hoa hoc
nhan dan » gian dan, nhan tai
phan dau » phan tu, hang dau
so cach » so sach, co cach, loi cach
mo hoc » mon hoc, co hoc
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: so cach thoi tap, nghien cuu mo hoc nganh khoa hoc xa hoi ca ((nhan dan) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so cach thoi tap, nghien cuu mo hoc nganh khoa hoc xa hoi ca ((nhan dan) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: so cach thoi tap, nghien cuu mo hoc nganh khoa hoc xa hoi ca ((nhan dan) or (phan dau))*.