Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
dich hoc » sinh hoc, hinh hoc, tinh hoc
toan hoc » toan khoa, van hoc, hoa hoc
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
tu dich » te dich, chu dich, hut dich
mon hoc » dong hoc
va nhan » van nhan, ca nhan, va phan
ma hoi » mai hoi, xa hoi, ma hoa

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 ((mon hoc) OR (toan hoc)) nganh khoa hoc ma hoi va nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dich hoc tap, nghien cuu ((mon hoc) OR (toan hoc)) nganh khoa hoc ma hoi va nhan tai".
• Adding a wildcard symbol may retrieve word variants: tu dich hoc tap, nghien cuu ((mon hoc) OR (toan hoc)) nganh khoa hoc ma hoi va nhan tai*.