Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
cach hoc » cach thuc, cach thoi, dich hoc
cong cac » cuong cac, cong tac, cong cau
phan dan » phan dang, phan dau, nhan dan
tu cach » tu cac
va phan » van phan, va phat, va phap
hoc xa » hoc ma

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 thu cong cac ((nganh khoa) or (doanh khoa)) hoc xa hoi va phan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien thu cong cac ((nganh khoa) OR (doanh khoa)) hoc xa hoi va phan dan.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien thu cong cac ((nganh khoa) or (doanh khoa)) hoc xa hoi va phan dan*.