Perhaps you should try some spelling variations:
nganh khang » nganh khong, ngan hang, nhanh thang
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
cach thuc » anh thuc, cac thu
hoc nganh » hoc nhanh
gian lang » gian dan
sach hoc » cach hoc, sach hoi, mach hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va gian » va gianh, van gian, va giai

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: tu ((sach hoc) OR (cach thuc)) tap, nghien cuu mon hoc nganh khang thuoc xa hoi va gian lang~.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoc) or (cach thuc)) tap, nghien cuu mon hoc nganh khang thuoc xa hoi va gian lang*.