Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
thu cach » thuc cach, thu canh, tu cach
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan dan » phan dau, gian dan, nhan tai
va nhan » van nhan, ca nhan, va phan
ma hoi » mai hoi, xa hoi, ma hoa
toan » tran

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu cach hoc tap, nghien cuu cong hoc ((nganh khoa) or (toan khoa)) hoc ma hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cach hoc tap, nghien cuu cong hoc ((nganh khoa) OR (toan khoa)) hoc ma hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: thu cach hoc tap, nghien cuu cong hoc ((nganh khoa) or (toan khoa)) hoc ma hoi va nhan dan*.