Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
hoi tap » hoc tap, hoi tai, hai tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((hoi tap) OR (hoi dap)), nghien cuu mon hoc nganh khoa hoc mai hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((hoi tap) OR (hoi dap)), nghien cuu mon hoc nganh khoa hoc mai hoi va nhan dan*".