Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khoi nganh » hoc nganh, moi nganh
cong khoi » cong khi, cong nhoi, tong khoi
khong hoc » khung hoc, thong hoc, khong thuoc
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
van nhan » van phan, van thanh, danh nhan
te mach » ke mach, te sach, tim mach
va nhan » ca 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: te mach hoc tap, nghien cuu cong khoi nganh khong hoc xa hoi ((va nhan) or (van nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te mach hoc tap, nghien cuu cong khoi nganh khong hoc xa hoi ((va nhan) OR (van nhan)) van.
• Adding a wildcard symbol may retrieve word variants: te mach hoc tap, nghien cuu cong khoi nganh khong hoc xa hoi ((va nhan) or (van nhan)) van*.