Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan 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
phan dan » phan dang, phan dau, nhan dan
va phan » van phan, va phat, va phap
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: thu cach hoc tap, nghien cuu cong hoc ((nganh khoa) or (doanh khoa)) hoc ma hoi va phan 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 (doanh khoa)) hoc ma hoi va phan dan.
• Adding a wildcard symbol may retrieve word variants: thu cach hoc tap, nghien cuu cong hoc ((nganh khoa) or (doanh khoa)) hoc ma hoi va phan dan*.