Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
tu mach » tu cach, tu manh, tu hach
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va nhan » van nhan, va phan, va nha

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cuu dong hoc nganh khong hoc mai hoi ((va nhan) or (ca nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu dong hoc nganh khong hoc mai hoi ((va nhan) OR (ca nhan)) van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu dong hoc nganh khong hoc mai hoi ((va nhan) or (ca nhan)) van*.