Perhaps you should try some spelling variations:
cuu thuong » cuu phuong, cua thuong, cuu tuong
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
cuu tong » cuu cong, cuu tinh, huu tung
khoa hoc » hoa hoc
dap nhan » dap nha, dac nhan, dam nhan
nhan dan » phan dau, gian dan, nhan tai
so sach » so sanh, bo sach, co sach
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 ((cuu thuong) or (cuu tong)) hoc nganh khoa hoc xa hoi dap nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoc tap, nghien ((cuu thuong) OR (cuu tong)) hoc nganh khoa hoc xa hoi dap nhan dan.
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien ((cuu thuong) or (cuu tong)) hoc nganh khoa hoc xa hoi dap nhan dan*.