Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
cong thuoc » cong thuc, dong thuoc, long thuoc
hoc nganh » hoc nhanh
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
tinh hoc » sinh hoc, tin hoc, hinh hoc
thuoc la » thuoc ma, thuoc va, thuoc tai
cac nhan » ca nhan, cac nha, cam nhan
nhan van » nhan dan, nhan va, phan van
hoi cac » hoc cac, voi cac, hoa cac
la hoi » lai hoi, xa hoi, le hoi

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: so ((mach hoc) OR (cach hoc)) tap, nghien cuu tinh hoc nganh cong thuoc la hoi cac nhan van~.
• Adding a wildcard symbol may retrieve word variants: so ((mach hoc) or (cach hoc)) tap, nghien cuu tinh hoc nganh cong thuoc la hoi cac nhan van*.