Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
nhan tao » nhan tai, nhan dan
khoa hoc » hoa hoc
mai khoa » tai khoa, may khoa, dai khoa
cuu cong » cua cong, thu cong, cac cong
co nganh » hoc nganh, cac nganh, moi nganh
va nhan » van nhan, ca nhan, va phan
khoa va » khoan va, khoa ma, hoa va
hoc mai » hoc ma, hoc dai, hoc bai
su sach » so sach, vu sach
doi dap » hoi dap, doi dau, do dap
doi tap » doi tac, doi tai, doi tan
cong co » dong co, cong cu, cong so

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((doi tap) or (doi dap)), nghien cuu cong co nganh khoa hoc mai khoa va nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((doi tap) OR (doi dap)), nghien cuu cong co nganh khoa hoc mai khoa va nhan tao.
• Adding a wildcard symbol may retrieve word variants: su sach ((doi tap) or (doi dap)), nghien cuu cong co nganh khoa hoc mai khoa va nhan tao*.