Perhaps you should try some spelling variations:
cuu duong » cau duong, cuu dong, cuu tuong
duong hoc » dong hoc, dung hoc, duong hoi
sanh hoc » sinh hoc, anh hoc, danh hoc
dan hoat » van hoa, dan hoc, danh hoa
dan khoa » dang khoa, da khoa, san khoa
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
so sanh » do sanh
hoa van » hoa dan, hoang van, hoa phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh hoc tap, nghien cuu duong hoc ((dan hoat) or (dan khoa)) hoc ma hoa van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh hoc tap, nghien cuu duong hoc ((dan hoat) OR (dan khoa)) hoc ma hoa van nhan dan.
• Adding a wildcard symbol may retrieve word variants: so sanh hoc tap, nghien cuu duong hoc ((dan hoat) or (dan khoa)) hoc ma hoa van nhan dan*.