Perhaps you should try some spelling variations:
dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
hoc ngan » hoc nganh, boc ngan, hoc nga
nhan dan » phan dau, gian dan, nhan tai
tu dich » te dich, chu dich, hut dich
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dich hoc tap, nghien cuu toan hoc ngan hang ((hoc xa) or (hoc ma)) hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dich hoc tap, nghien cuu toan hoc ngan hang ((hoc xa) OR (hoc ma)) hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu dich hoc tap, nghien cuu toan hoc ngan hang ((hoc xa) or (hoc ma)) hoi va nhan dan*.