Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
nhan tai » hang tai, van tai, toan tai
ve sinh » vi sinh, va sinh
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma hoi » mai hoi, xa hoi, ma hoa
hoi ca » hoi cua, hoi cac, hoi cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ve sinh hoc tap, nghien cuu mon hoc ((nganh khoa) OR (doanh khoa)) hoc ma hoi ca nhan tai~.
• Adding a wildcard symbol may retrieve word variants: ve sinh hoc tap, nghien cuu mon hoc ((nganh khoa) or (doanh khoa)) hoc ma hoi ca nhan tai*.