Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
cua nhan » ca nhan, cua ngan, cua nha
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi cua » hoi chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach hoc tap, nghien cuu mon hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi cua nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach hoc tap, nghien cuu mon hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi cua nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuoc sach hoc tap, nghien cuu mon hoc nganh khoa ((hoc xa) OR (hoc ma)) hoi cua nhan dan*.