Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
tinh hoc » sinh hoc, tin hoc, hinh hoc
thuoc la » thuoc ma, thuoc va, thuoc tai
nhan tai » hang tai, van tai, toan tai
mot hoc » mon hoc, mo hoc, mot goc
la hoi » lai hoi, xa hoi, le hoi
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((mach hoc) or (tinh hoc)) tap, nghien cua mot hoc nganh khong thuoc la hoi ca nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((mach hoc) OR (tinh hoc)) tap, nghien cua mot hoc nganh khong thuoc la hoi ca nhan tai.
• Adding a wildcard symbol may retrieve word variants: thu ((mach hoc) or (tinh hoc)) tap, nghien cua mot hoc nganh khong thuoc la hoi ca nhan tai*.