Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoa nganh » hoc nganh, khoi nganh, hoa doanh
dich hoc » sinh hoc, hinh hoc, tinh hoc
sach dao » lanh dao
cong hoa » dong hoa, dong hoc, hang hoa
khoa hoc » hoa hoc
dan nhan » danh nhan, dan chan, van nhan
nhan van » nhan dan, nhan va, phan van
hoi dan » hoa dan, hoc dan, hoi dap
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: tu ((dich hoc) or (sach dao)) tap, nghien thu cong hoa nganh khoa hoc xa hoi dan nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((dich hoc) OR (sach dao)) tap, nghien thu cong hoa nganh khoa hoc xa hoi dan nhan van.
• Adding a wildcard symbol may retrieve word variants: tu ((dich hoc) or (sach dao)) tap, nghien thu cong hoa nganh khoa hoc xa hoi dan nhan van*.