Perhaps you should try some spelling variations:
hang khoa » dung khoa
phan dang » phan dau, phan cong, nhan dan
dich hoc » sinh hoc, hinh hoc, tinh hoc
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
phan dan » phan dau, nhan dan, phan van
ve dich » va dich, van dich
mo hoc » mon hoc, co hoc
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve dich hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va ((phan dan) OR (phan dang))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve dich hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va ((phan dan) OR (phan dang))".
• Adding a wildcard symbol may retrieve word variants: ve dich hoc tap, nghien cuu mo hoc hang khoa hoc xa hoi va ((phan dan) OR (phan dang))*.