Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, mach hoc, sach duoc
sach hoi » sach doi, sach moi, cach thoi
khoa hoc » hoa hoc
va thanh » gia thanh, ban thanh, va tinh
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma hoi » mai hoi, xa hoi, ma hoa

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

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