Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
cau nhan » chau nhan, ca nhan, cu nhan
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
mon hoc » toan hoc, dong hoc
hoc cau » hoc cao, hoc cac, hoc can
mo hoc » co hoc
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa 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 tap, nghien cuu ((mo hoc) OR (mon hoc)) nganh khoa hoc xa hoc cau nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu ((mo hoc) OR (mon hoc)) nganh khoa hoc xa hoc cau nhan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu ((mo hoc) OR (mon hoc)) nganh khoa hoc xa hoc cau nhan van*.