Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hoc nhanh » hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
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: thuat sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuat sach hoc tap, nghien cuu dong ((hoc nhanh) OR (hoc nganh)) khoa hoc xa hoi va nhan dan*.