Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
cach hoi » cach thoi, cach noi, cach hoc
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
su cach » su sach, tu cach, su cac
cuu mon » cuu mo, cuu mot, cuu cong
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach hoi dap, nghien cuu mon ((hoc nganh) or (hoc nhanh)) khoa hoc xa hoi ca nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach hoi dap, nghien cuu mon ((hoc nganh) OR (hoc nhanh)) khoa hoc xa hoi ca nhan dan.
• Adding a wildcard symbol may retrieve word variants: su cach hoi dap, nghien cuu mon ((hoc nganh) or (hoc nhanh)) khoa hoc xa hoi ca nhan dan*.