Perhaps you should try some spelling variations:
dich hoc » sinh hoc, hinh hoc, tinh hoc
hoc hang » hoc bang, hoc tang, hoc han
hoc hanh » hoc nhanh, hoc thanh, hoc anh
khoa hoc » hoa hoc
phan dan » phan dang, phan dau, nhan dan
ve dich » va dich, van dich
va phan » van phan, va phat, va phap
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) OR (hoc hanh)) khoa hoc xa hoi va phan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve dich hoc tap, nghien cuu mo ((hoc hang) OR (hoc hanh)) khoa hoc xa hoi va phan dan".
• Adding a wildcard symbol may retrieve word variants: ve dich hoc tap, nghien cuu mo ((hoc hang) OR (hoc hanh)) khoa hoc xa hoi va phan dan*.