Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
cach thoi » cac thoi, cach thuc, cach noi
hoc doanh » hoa doanh, hoc danh, hoc dan
thoi tap » toi tap, hoc tap, thoi dai
khoa hoc » hoa hoc
tu cach » tu cac
cua mon » cua mot, cua moi, cua con
mon hoc » toan hoc, dong hoc
va nhan » van nhan, va phan, va nha
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 thoi tap, nghien cua mon hoc doanh khoa hoc xa hoi ((va nhan) or (ca nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien cua mon hoc doanh khoa hoc xa hoi ((va nhan) OR (ca nhan)) van.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien cua mon hoc doanh khoa hoc xa hoi ((va nhan) or (ca nhan)) van*.