Perhaps you should try some spelling variations:
can khoa » san khoa, con khoa, van khoa
khoa hoc » hoa hoc
cau phan » chau phan, cuu phan, cac phan
phan van » pham van, thanh van, luan van
su sach » vu sach
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc can » hoc dan, hoc cao, hoc cac
hoa cau » hoa cac, hoa dau, hoa mau
hoc xa » hoc ma
xa hoa » xa khoa, 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: ((su sach) OR (so sach)) hoc tap, nghien cuu mon hoc can khoa hoc xa hoa cau phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) hoc tap, nghien cuu mon hoc can khoa hoc xa hoa cau phan van".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) hoc tap, nghien cuu mon hoc can khoa hoc xa hoa cau phan van*.