Perhaps you should try some spelling variations:
khoi nganh » hoc nganh, moi nganh
nganh khoa » nganh hoa, nganh khong, doanh khoa
cong khoi » cong khi, cong nhoi, tong khoi
van thanh » ban thanh, van tuan
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
te sach » toc sach
va nhan » van nhan, ca nhan, va phan
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 sach hoc tap, nghien cuu cong khoi nganh khoa hoc xa hoi ((va nhan) or (van thanh)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach hoc tap, nghien cuu cong khoi nganh khoa hoc xa hoi ((va nhan) OR (van thanh)) van.
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu cong khoi nganh khoa hoc xa hoi ((va nhan) or (van thanh)) van*.