Perhaps you should try some spelling variations:
sanh hoc » sinh hoc, anh hoc, danh hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
nhan dan » phan dau, gian dan, nhan tai
so sanh » do sanh
dan hoa » danh hoa, dan hoat, dan khoa
hoa van » hoang van, hoa phan, hoa lang

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 tong hoc dan hoa hoc ma ((hoa van) OR (hoa dan)) nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh hoc tap, nghien cuu tong hoc dan hoa hoc ma ((hoa van) OR (hoa dan)) nhan dan".
• Adding a wildcard symbol may retrieve word variants: so sanh hoc tap, nghien cuu tong hoc dan hoa hoc ma ((hoa van) OR (hoa dan)) nhan dan*.