Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
doanh khoa » toan khoa
nganh khoa » nganh hoa, nganh khong, anh khoa
cong hoc » dong hoc, cong hoa, cong coc
dan nhan » danh nhan, dan chan, van nhan
nhan dan » phan dau, gian dan, nhan tai
anh hoc » sinh hoc, benh hoc, hinh hoc
hoi dan » hoa dan, hoc dan, hoi dap
tu anh » tu hanh, tu manh, thu anh
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 anh hoc tap, nghien thu cong hoc ((doanh khoa) or (nganh khoa)) hoc xa hoi dan nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu anh hoc tap, nghien thu cong hoc ((doanh khoa) OR (nganh khoa)) hoc xa hoi dan nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu anh hoc tap, nghien thu cong hoc ((doanh khoa) or (nganh khoa)) hoc xa hoi dan nhan dan*.