Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh
sach hoc » cach hoc, sach hoi, mach hoc
hoc phan » hoc dan, hoc pho
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
so sach » so sanh, bo sach, co sach
va nhan » van nhan, ca nhan, va phan
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 mo ((hoc nhanh) OR (hoc phan)) khoa hoc xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoc tap, nghien cuu mo ((hoc nhanh) OR (hoc phan)) khoa hoc xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mo ((hoc nhanh) OR (hoc phan)) khoa hoc xa hoi va nhan dan*.