Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
co nganh » hoc nganh, cac nganh, moi nganh
cua nhan » ca nhan, cua ngan, cua nha
nhan dan » phan dau, gian dan, nhan tai
tu sach » thu sach, su sach, te sach
hoi cua » hoi chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien cuu dong co nganh khoa ((hoc xa) or (hoc ma)) hoi cua nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu dong co nganh khoa ((hoc xa) OR (hoc ma)) hoi cua nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu dong co nganh khoa ((hoc xa) or (hoc ma)) hoi cua nhan dan*.