Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
cac nhan » ca nhan, cac nha, cam nhan
nhan van » nhan dan, nhan va, phan van
so sach » so sanh, bo sach, co sach
voi cac » loi cach
hoc xa » hoc ma
xa voi » xa hoi, ba voi, da voi

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoc tap, nghien cuu tinh ((hoc nganh) OR (hoc nhanh)) khoa hoc xa voi cac nhan van~".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu tinh ((hoc nganh) OR (hoc nhanh)) khoa hoc xa voi cac nhan van*.