Perhaps you should try some spelling variations:
nghien luu » nghien cuu, nguyen luu
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
luu trong » luat trong, tu trong, le trong
trong hoc » truong hoc, tuong hoc, thong hoc
sach hoc » cach hoc, sach hoi, mach hoc
so sach » so sanh, bo sach, co sach
nha dan » nhan dan, nhac dan, nha van
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: so sach hoc tap, nghien luu trong hoc ((nganh khoa) or (doanh khoa)) hoc xa hoi dap nha dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoc tap, nghien luu trong hoc ((nganh khoa) OR (doanh khoa)) hoc xa hoi dap nha dan.
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien luu trong hoc ((nganh khoa) or (doanh khoa)) hoc xa hoi dap nha dan*.