Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nhanh » hoc nganh, hoc phan
mach hoc » cach hoc, dich hoc, bac hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
thuoc la » thuoc ma, thuoc va, thuoc tai
nhan dan » phan dau, gian dan, nhan tai
anh hoc » sinh hoc, benh hoc, hinh hoc
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: tu ((mach hoc) or (anh hoc)) tap, nghien cuu toan hoc nhanh khong thuoc la hoi ca nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (anh hoc)) tap, nghien cuu toan hoc nhanh khong thuoc la hoi ca nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (anh hoc)) tap, nghien cuu toan hoc nhanh khong thuoc la hoi ca nhan dan*.